How does the Media Influence Perception of the Female Representation Essay

How does the Media Influence Perception of the Female Representation - Essay Example Gone are the days when beauty lay in the eye of the beholder, and a well-proportioned body was a thing of beauty and object of admiration. But, then, we live in a consumer, if not a consumerist, society where consumption means â€Å"the purchase and use of goods, leisure activities and services†. (Jagger. 2000). Though some writers (Schama. 1987) trace consumerism to the 17th century Netherlands, others (Ewen. 1976; Susman. 1982) emphasise that it was not until the years between the First and the Second World Wars in the USA and Britain that consumer culture became fully established. The elusive â€Å"ideal† Even today one hears it said the world over that â€Å"consumer is king†, or the â€Å"queen† as the case may be, but the insidious brainwashing of the â€Å"king† or the â€Å"queen† by the media at the instance of advertisers has left the â€Å"queen† with no volition. She dances to the tunes of the media, the tunes called by advertisers who pay the piper. Consumer society develops an increasing need to shop, meaning that individual consumers are increasingly finding the definition of themselves within commodities which can develop a feeling of high or low esteem if they do not have the new car, handbag, or pair of shoes presented as the new â€Å"ideal†. (Marcuse: 1964). Shakespeare may have had his own reasons for saying in one of his plays that â€Å"good wine needs no bush†(â€Å"As You Like It†), but in today’s world advertising rules the roost and helps what amounts really to commodification of the consumer. After all, they have come to see themselves in terms of the commodities and goods that they purchase and possess. Advertisers sell the "ideal" image that most people long for but not all of whom can achieve. That "ideal", of its very nature, is unattainable, a mirage that one keeps chasing all one's life, is not allowed to be realised in the palaver of the media. Those who buy the advertised products are made to image that they are buying the resultant image. Thus, advertising claims to sell a lifestyle through the wares it hawks. Commodities are consumed not only for their "use value" but also for their "sign value" (Jagger: 2000). That means commodities are bought also for "what they signify" (p.47) because "symbolic consumption is fundamental to the process by which modern individuals create and display their identities". Nature defied! Similarly, one's appearance "does express personhood" (Judith Andre. 1994. p. 21). "It expresses one's choice, one's values, and one's taste" and thus, possibly, one's identity. Thus, what was once considered immutable and the work of Nature is being reworked. For consumer culture to flourish, not only do new images have to keep being created, but consumers need to have reasons for keeping on buying. The reason, Jagger argues, is "the desire for the sign, not the commodity itself". In other words, it is not the intrinsic worth or utility of a commodity that influences that judgment of consumers but its appearance. Above all, the tendency to keep up with the Joneses, the need to be seen having what everyone wants, forgetting that the ideal is unattainable, combine to help advertisers put consumers into a straitjacket. An obvious example is the television programme "MTV Cribs" where the rich and the famous show viewers around their homes, and, in the process, show what is most likely something they will never have. However, it is something viewers will continue to

The world Of Mice and Men Essay Example for Free

The world Of Mice and Men Essay Question: The world Of Mice and Men is one of hostility and suspicion. Explore the second chapter of Of Mice and Men in the light of this statement and decide whether you agree. Introduction Of Mice and Men is a contrasting story to others because it has many different sides to it. You could look at it one way and say that its a joyful book and has only a couple of nasty people in the book, But you could look at it the other way and say that the ranch is a horrible, mean and a fight to survive. The Bunkhouse is a small room with 8 beds made up and the other three showing their burlap ticking, the walls were whitewashed and the floor was unpainted. From only the first few lines of chapter two and you can see that Steinbeck has tried to show us the reader that the bunkhouse like the rest of the farm is small and not a nice place to be. When it then goes on to talk about people possetions it shows us that in that time is was normally to only have about 5 things on you (sometimes even less). The Character Candy Candy is the swamper (cleaner of floors by pouring water on it and using a mop to clean of the dirt) on the ranch, when George and Lennie Arrive on the Ranch he is the first person to greet them. He is meant to be an old man, handless and without a Dog. He acts extremely nice towards George and Lennie (some say too nice). Being Old he is trying to keep his job for as long as possible because back then (and still now in America) there was no unemployment befits like there in the UK so he is trying to keep his Job to live by calling everyone a nice fella meaning everyone is kind back to him (most of the time). Interview with Boss In the Interview with the Boss he comes in and trys to ask George and Lennie why they are half a day late to work. George tries to tell him that the Bus driver give us a bum steer. But when the Boss hears this he doesnt even care and carries on about what he had to do. This shows us that the Boss doesnt change his mind at all because he thinks what he does/says is right and thats it but by the end of the talk he is almost like a nice person almost like he has a guard up and when everything is okay the guard goes and along comes a helpful man. The Character Curly Curly is the Bosses Son, he is meant to be small and one of those small guys who hate big guys. As soon as he comes through the door he looks a Lennie and puts up to fits, like you would in a boxing ring. This shows the most hostility of all of the things on the ranch because some guy walks in who the swamper called a nice fella and he tries to start a boxing fight with your Mate/You. After going into the room like hes in a boxing fight he then asks some questions directed to Lennie, Which because George Told Lennie strictly not to talk George has to talk and answer them. This aggravates Curly because he may not be in charge of anything he really thinks himself to be on the top because the Boss will never fire him because he is his son. The Character Curlys Wife Curlys Wife is a tart (a married woman who wants to see other men), well thats that Curly thinks when he said I think hes married a . tart. She has meant to have been only married to Curly for only 2 weeks and shes already on the hunt for other men? Some people think that it is because she was just a tart in the first place and always has been and thats why Curly married her but some other people think that it is because she feels like she is held captive in the house and whenever she is with Curly outside the house it told to go to the house. This shows us that she could be feeling like she is all most an item of Curlys and isnt allowed to go anywhere without permission of Curly. This shows us again that the ranch can be almost like a prison. Conclusion Overall I think that for Chapter Two the statement: The world Of Mice and Men is one of hostility and suspicion is true because if you look at all the points above the only nice thing at the ranch is Candy and he is only putting it on so he doesnt get fired from the ranch and die from not having any money. This shows us that the ranch a place with only Good patches and are few and far between.

Humanity Educating Philosophy :: Philosophy Philosophical Papers

Humanity Educating Philosophy ABSTRACT: In what follows, I focus on the partiality and fallibility of each of us as individuals, and explore what that means for us as epistemic agents. When we examine the tradition of Western European thought, we note that most epistemological theories assume individuals can know the answer, and are able to critique what is passed down to others as socially constructed knowledge. Many have made the argument that while humanity can be deceived, one individual can know, and therefore teach the others about their deceptions and false beliefs. I argue that because we are embedded and embodied social beings who do not have transcendental, objective, "God's eye views" of the world in which we live, we need each other to help us be potential knowers able to make knowledge claims. Others help us become aware of our own situatedness and help us develop enlarged views. Rather than thinking that individual philosophers, credentialed experts in their field of study, know more and therefore h ave knowledge they can teach humanity, I argue that all of us, as members of humanity, have much that we can teach each other. My position is that it is only with the help of others that we are able to know anything. Introduction The theme of this conference is Paideia: Philosophy Educating Humanity. What I address as my topic is "What humanity can teach philosophy." In particular, I focus on the partiality and fallibility of each of us as individuals, and explore what that means for us, as epistemic agents. I argue that because we are embedded and embodied social beings who do not have transcendental, objective, "God's eye views" of the world in which we live, we need each other to help us be potential knowers able to make knowledge claims. Others help us become aware of our own situatedness and help us develop enlarged views. Rather than thinking individual philosophers, with credentials as experts in their field of study, know more and therefore have knowledge they can teach humanity, I argue that all of us, as members of humanity, have much we can teach each other. My position is that it is only with the help of others that we are able to know anything. Ever since Plato made the argument that each one of us has all knowledge in our souls, that each of us already knows all truth (the Forms), but that when our soul inhabited a body it "forgot" and so it must spend a lifetime "remembering" what it already knows, (1) he set the tone for the Western European world to consider how it is that each one of us knows truth.

Inventory System

A perpetual inventory tracking system is a method of immediately accounting for inventory sales in the inventory account, if there is no theft or spoilage. It is an inventory management system where store balances of inventory are recorded after every transaction. It eliminates the need for the store to close down constantly for inventory stock-taking as perpetual inventory systems allow for continuous stock-taking. Perpetual inventory systems keep a running account of the company's inventory. Perpetual inventory systems involve more record-keeping than periodic inventory systems.Every inventory item is kept on a separate ledger. These inventory ledgers contain information on cost of goods sold, purchases, and inventory on hand. Perpetual inventory management systems allow for a high degree of control of the company's inventory by management. Perpetual inventory management is generally used by companies who have the ability to scan the inventory items sold and who use  point-of-sal e inventory systems. Perpetual inventory systems provide the business owner with a record of what is sold, where it was sold from, when it was sold, and for what price it was sold.As a result, it allows for businesses to have more than one location with one centralized inventory management system. Even with a perpetual inventory management system, the company still needs to shut down at least annually to do a periodic, or manual, inventory count. The scanned data should tell the business owner exactly what inventory should be on hand. The major advantage of doing a periodic inventory count is to determine how much inventory has been lost, stolen, or subject to spoilage.What is a Periodic Inventory System? A periodic inventory system does not require day-to-day tracking of physical inventory. Purchases, cost of goods sold, and inventory on hand cannot be tracked until the end of the accounting time period when a physical inventory is performed and ending inventory is compared against the sum of beginning inventory and purchases. Cost of ending inventory can be calculated by using the  LIFO or FIFO inventory accounting methods, or other less common methods. Inventory System Janes (2001) stated that computers are extremely reliable device and very powerful calculators with some great accessories applications like word processing problem for all of business activities, regardless of size, computers have three advantages over other type of office equipment that process information because computer are faster, more accurate more economical Reyes (2005) task would be time consuming to accomplish manually and more practical with the aid of computers field in cabinet.Dioso (2001) stated    that computer assist    careful intelligent planning, organizing, actuating and controlling . This maybe observed from the past that they monitor production activities, solve scientific problem and help arrive in tentative answer to a multitude of involve conditions. Ralph M. Stair (1999) emphasized that the development of technology through the years have enabled us to do more with less effort. From the orientation of the light bulb to the industrial revolution and beyo nd, we have continuously tried to in a more efficient means of doing tasks.Lewis (2002) stated that the reason for using computers vary from person to person. Some of the computers in business are to perform accuracy, to be as productivity, to decrease bottle necks or hassles to alter cash flows or to simples elevate your status. Sybex    Inc (1999) stated that visual basic provide a graphical environment in which the users usually designed the forms and control that become the building block of tour application . Visual Basic support many useful tools that will help the user more productivity. Computerize sales and inventory systemComputers began from a wild imaginative idea to the world’s highly prioritized tool. Computers today are now used as a substitute to manual processes and other past inventions like the radio, television, etc. It is now used by people for much simpler, easier and faster way to do things. Some used it as a hobby, and some use it as a job. Technolog y has never stopped from advancing through the years. Its new innovations helps answer the people’s further complex questions. Why not use these advantages to benefit ourselves? Many people use computers in their daily lives.Some use it for transactions, some use it for educational purposes and others use it for data storage. Though it might sound unnecessary but in some cases when storing a file for such a big company, can you manage it properly? Organizing, finding a file, etc. With computers, it can help you simplify the process of storing and managing the files you need for future use and make finding files easier than the manual process. A Proposed Sales and Inventory System In business like merchandising, Sales and Inventory system plays an important role.It is used to track all the transactions made by the business and responsible for monitoring the items supplies. All the business transactions must be properly recorded and must be fully secured by password. A Computer ized system is the best solution and most innovative answer for their needs. The researchers had been motivated to do a study on this topic according to the above observation. The result may help others to understand more about computer-generated data processing, especially on how to deal with computers in terms of speed, accuracy and data security Inventory System This chapter of a thesis commences a brief statement and enumerating the main topics that are to be covered in it; namely;1) Research Design; 2) Sources of Data (Locale of the Study and Population/Sampling); 3) Instrumentation and Data Collection; and 4) Tools for Data Analysis.Research DesignThe appropriate research design should be specified and described.A research design encompasses the methodology and procedure employed to conduct scientific research. The design of a study defines the study type (descriptive, correlational, semi-experimental, experimental, review, meta-analytic) and sub-type (e.g.: descriptive-longitudinal case study), research question and hypotheses, independent and dependent variables, experimental design if applicable, data collection methods and a statistical analysis plan.Sources of DataDescribe the locale of the study and the research population.Locale of the Study Describes the place where the study was conducted and the rationale behind its choice. Popu lation/Sampling Describe the population of interest and the sampling of subjects used in the study. Instrumentation and Data CollectionDescribe the instrument, what it will measure, how to interpret, to whom it will be administered and if it is necessary, describe how it will be administered. Discuss how the validity and the reliability will be established. Specify the level of reliability (probability). Give details of instruction given to assistants if persons other than the researcher gather data. State qualifications of informants if used in the study.Tools for Data Analysis Determine and justify the statistical treatment for each sub-problem Determine and justify the scales of values used and the descriptive equivalent ratings, if any.In thesis writing, the most difficult part to defend is Chapter 4 because it is inthis section where you will present the results of the whole study. Here is a sample thesis format.In thesis writing, the most difficult part to defend is Chapter 4 because it is in this section where you will present the results of the whole study. Here is a sample thesis format.CHAPTER 4: PRESENTATION, ANALYSIS AND INTERPRETATION OF DATAPresentation of DataPresent the findings of the study in the order of the specific problem as stated in the statement of the Problem. Present the data in these forms: Tabular Textual Graphical (optional) The ZOOM LENS approach may be used for purposes of clarity in the presentation of data, i.e. general to particular, macro to micro or vice versa.Analysis of the DataData may be analyzed quantitatively or qualitatively depending on the level of measurement and the number of dimensions and variables of the study. Analyze in depth to give meaning to the data presented in the data presented in the table. Avoid table reading. State statistical descriptions in declarative sentences, e.g. in the studies involving:Correlation State level of correlation State whether positive or negative Indicate the level of significa nce Make a decision Differences of Measures State the obtained statistical results Indicate the level of significance of the difference Make a decision Interpretation of Data1. Establish interconnection between and among data 2. Check for indicators whether hypothesis/esis/are supported or not by findings. 3. Link the present findings with the previous literature. 4. Use parallel observations with contemporary events to give credence presented in the introduction. 5. Draw out implications.In thesis writing, the Chapter is simply a summary of what the researcher had done all throughout the whole research. The following format serves as a sample:CHAPTER 5: SUMMARY, CONCLUSIONS AND RECOMMENDATIONSSummary of Findings This describes the problem, research design, and the findings (answer to the questions raised). The recommended format is the paragraph form instead of the enumeration form. For each of the problems, present:The salient findings, The results of the hypothesis tested Conclusions These are brief, generalized statements in answer to the general and each of the specific sub-problems. These contain generalized in relation to the population. These are general inferences applicable to a wider and similar population. Flexibility is considered in making of conclusions. It is not a must to state conclusions on a one-to-one correspondence with the problems and the findings as all variables can be subsume in one paragraph. Conclusions may be used as generalizations from a micro to a macro-level or vice versa (ZOOM LENS approach).Recommendations They should be based on the findings and conclusion of the study. Recommendations may be specific or general or both. They may include suggestions for fu rther studies. They should be in non-technical (skilled) language.They should be feasible, workable, flexible, doable, adaptable. An action plan is optional. Inventory System A perpetual inventory tracking system is a method of immediately accounting for inventory sales in the inventory account, if there is no theft or spoilage. It is an inventory management system where store balances of inventory are recorded after every transaction. It eliminates the need for the store to close down constantly for inventory stock-taking as perpetual inventory systems allow for continuous stock-taking. Perpetual inventory systems keep a running account of the company's inventory. Perpetual inventory systems involve more record-keeping than periodic inventory systems.Every inventory item is kept on a separate ledger. These inventory ledgers contain information on cost of goods sold, purchases, and inventory on hand. Perpetual inventory management systems allow for a high degree of control of the company's inventory by management. Perpetual inventory management is generally used by companies who have the ability to scan the inventory items sold and who use  point-of-sal e inventory systems. Perpetual inventory systems provide the business owner with a record of what is sold, where it was sold from, when it was sold, and for what price it was sold.As a result, it allows for businesses to have more than one location with one centralized inventory management system. Even with a perpetual inventory management system, the company still needs to shut down at least annually to do a periodic, or manual, inventory count. The scanned data should tell the business owner exactly what inventory should be on hand. The major advantage of doing a periodic inventory count is to determine how much inventory has been lost, stolen, or subject to spoilage.What is a Periodic Inventory System? A periodic inventory system does not require day-to-day tracking of physical inventory. Purchases, cost of goods sold, and inventory on hand cannot be tracked until the end of the accounting time period when a physical inventory is performed and ending inventory is compared against the sum of beginning inventory and purchases. Cost of ending inventory can be calculated by using the  LIFO or FIFO inventory accounting methods, or other less common methods. Inventory System Janes (2001) stated that computers are extremely reliable device and very powerful calculators with some great accessories applications like word processing problem for all of business activities, regardless of size, computers have three advantages over other type of office equipment that process information because computer are faster, more accurate more economical Reyes (2005) task would be time consuming to accomplish manually and more practical with the aid of computers field in cabinet.Dioso (2001) stated    that computer assist    careful intelligent planning, organizing, actuating and controlling . This maybe observed from the past that they monitor production activities, solve scientific problem and help arrive in tentative answer to a multitude of involve conditions. Ralph M. Stair (1999) emphasized that the development of technology through the years have enabled us to do more with less effort. From the orientation of the light bulb to the industrial revolution and beyo nd, we have continuously tried to in a more efficient means of doing tasks.Lewis (2002) stated that the reason for using computers vary from person to person. Some of the computers in business are to perform accuracy, to be as productivity, to decrease bottle necks or hassles to alter cash flows or to simples elevate your status. Sybex    Inc (1999) stated that visual basic provide a graphical environment in which the users usually designed the forms and control that become the building block of tour application . Visual Basic support many useful tools that will help the user more productivity. Computerize sales and inventory systemComputers began from a wild imaginative idea to the world’s highly prioritized tool. Computers today are now used as a substitute to manual processes and other past inventions like the radio, television, etc. It is now used by people for much simpler, easier and faster way to do things. Some used it as a hobby, and some use it as a job. Technolog y has never stopped from advancing through the years. Its new innovations helps answer the people’s further complex questions. Why not use these advantages to benefit ourselves? Many people use computers in their daily lives.Some use it for transactions, some use it for educational purposes and others use it for data storage. Though it might sound unnecessary but in some cases when storing a file for such a big company, can you manage it properly? Organizing, finding a file, etc. With computers, it can help you simplify the process of storing and managing the files you need for future use and make finding files easier than the manual process. A Proposed Sales and Inventory System In business like merchandising, Sales and Inventory system plays an important role.It is used to track all the transactions made by the business and responsible for monitoring the items supplies. All the business transactions must be properly recorded and must be fully secured by password. A Computer ized system is the best solution and most innovative answer for their needs. The researchers had been motivated to do a study on this topic according to the above observation. The result may help others to understand more about computer-generated data processing, especially on how to deal with computers in terms of speed, accuracy and data security

Changes for school

My alarm awakens me as a reminder to wake up to go to the most amazing place, School. School is like an amusement park, full of Joy and excitement. A place where every person dreams to go! Now time to really wake up and get to reality. School is the total opposite and If I had the chance to make changes to It, It would BEA number of things. There are many changes that I would Like to make to my school, but one thing would focus on changing would be the lunch.To start off, the amount of time we eve for lunch isn't even enough to take a bite out of your food after buying It. With a little more time for lunch I would be a lot more satisfied being able to finish my food. Another change I would make to the lunch would be the seating. With such a big school and an excessive amount of students there should be more tables and seats where we can eat comfortable without planning or rushing for a seat. The pizza Is another change I would make, I would Like to enjoy I nice tasting pizza Instead eating a pizza that taste like cardboard.Lunch would be so much better with this change on the lunch and result on kids actually wanting to come to school. Although we can't magically make changes to the school, I would want to change the number of students at the school. With so many students attending Ferguson the help in the offices are so hard to get through. For example, when you need to go excuse your absence it looks like they are giving stuff away! Another problem with the massive amount of students is the little time we get to walk in between classes.We et five minutes to play a little game of football to tackle your way through people and get to your class that feels like its yards always! Dismissal is a mess with bumper to bumper traffic and crowds of students crossing the streets. Maybe with a few less people school before, during, and after, wouldn't be such a hassle. If someone gave me the option to change something about my school, definitely it would be the schedule. Five days a week? That's way too much after the third day of school we are all exhausted and ready to drop dead!We spend way too much time at school, eight hours is a lot! Coming up with new hours and days for school would be a good idea. The sun isn't even out by the time we wake up, that's why we should start school at twelve in the afternoon so teachers won't complain anymore that students are falling asleep in class. Changing the school schedule would certainly be something to think about. After explaining my reasonable changes that should be made to the school, now they should be considered into effective regulations In the future.With a better lunch environment, an average number of students and a more comfortable schedule I think going to school would actually be a fun place where students want to be everyday! Now that would lead to many successful people In the next generation! Changes for school By Christianizing reality. School is the total opposite and if I had the chanc e to make changes to it, it would be a number of things. There are many changes that I would like to make to my school, but one thing I have for lunch isn't even enough to take a bite out of your food after buying it.With a here we can eat comfortable without planning or rushing for a seat. The pizza is another change I would make, I would like to enjoy I nice tasting pizza instead eating Although we can't magically make changes to the school, I would want to change to bumper traffic and crowds of students crossing the streets. Maybe with a few less a good idea. The sun isn't even out by the time we wake up, that's why we should they should be considered into effective regulations in the future. With a better lunch everyday! Now that would lead to many successful people in the next generation!

Anurognathus - Facts and Figures

Anurognathus - Facts and Figures Name: Anurognathus (Greek for without tail and jaw); pronounced ANN-your-OG-nah-thuss Habitat: Woodlands of western Europe Historical Epoch: Late Jurassic (150 million years ago) Size and Weight: About three inches long and a few ounces Diet: Insects Distinguishing Characteristics: Small size; stubby tail; short head with pin-shaped teeth; 20-inch wingspan About Anurognathus Except for the fact that it was technically a pterosaur, Anurognathus would qualify as the smallest dinosaur that ever lived. This hummingbird-sized reptile, no more than three inches long and a handful of ounces, differed from its fellow pterosaurs of the late Jurassic period thanks to its stubby tail and short (yet extremely strong) jaws, after which its name, Greek for without tail and jaw, derives. The wings of Anurognathus were very thin and delicate, stretching from the fourth fingers of its front talons back to its ankles, and they may have been brightly colored, like those of modern butterflies. This pterosaur is known by a single, well-preserved fossil specimen discovered in Germanys famous Solnhofen beds, also the source of the contemporary dino-bird Archaeopteryx; a second, smaller specimen has been identified, but has yet to be described in the published literature. The exact classification of Anurognathus has been a subject of debate; this pterosaur doesnt fit easily into either the rhamphorhynchoid or pterodactyloid family trees (typified, respectively, by the small, long-tailed, big-headed Rhamphorhynchus and the slightly larger, stubby-tailed, slender-headed Pterodactylus). Lately, the weight of opinion is that Anurognathus and its relatives (including the similarly tiny Jeholopterus and Batrachognathus) constituted a relatively unevolved sister taxon to the pterodactyloids. (Despite its primitive appearance, its important to keep in mind that Anurognathus was far from the earliest pterosaur; for example, the slightly bigger Eudimorphodon preceded it by 60 million years!) Because a free-flying, bite-sized Anurognathus would have made a quick snack for the much bigger pterosaurs of its late Jurassic ecosystem, some paleontologists wonder if this diminutive creature nested on the backs of large sauropods like the contemporary Cetiosaurus and Brachiosaurus, similar to the relationship between the modern Oxpecker bird and the African hippopotamus This arrangement would have afforded Anurognathus some much-needed protection from predators, and the bugs that constantly hovered around skyscraper-sized dinosaurs would have provided it with a steady source of food. Unfortunately, we dont have a scrap of evidence that this symbiotic relationship existed, despite that episode of Walking with Dinosaurs in which a tiny Anurognathus pecks insects off the back of a docile Diplodocus.

Historic and Contextual Studies

Historic and Contextual Studies Abstract The medieval period focuses on interesting fashion trends in clothing. It is also connected with the social and political influences shaping the vision on clothing and its role in history. In the paper, two historic styles are discussed to define the role of medieval history and gothic style in understanding modern interpretation of the garment.Advertising We will write a custom essay sample on Historic and Contextual Studies specifically for you for only $16.05 $11/page Learn More The revival of the historic styles is predetermined by its functionality, aestheticism, and occurring fashion trends. In particular, the revival of tunic as the garment for females is discovered by its functionality whereas the gothic dress is more connected to the upheaval of the romanticism. In this respect, the paper is divided into two parts discussing the garment and explaining its modern interpretation and purpose. More importantly, it also highlights descriptions a nd historic context within which the clothing styles have been formed. Medieval Period: Tunic Description of the Garment The medieval tunic looks like a large T-shirt. It was the most common type of clothing for both women and men originating from artisan classes. Male tunics reached crotch and thing in length; older men wore knee-length tunics (Diehl Donnelly, 2011). Women’s tunic length can range from thigh to knee, but older women prefer wearing longer tunics. Issues to be Discussed:Advertising Looking for essay on art and design? Let's see if we can help you! Get your first paper with 15% OFF Learn More History of emergence of tunic; Different forms and fabrics used in tailoring the garment (Netherton Owen-Crocker, 2012); Social status and appropriateness of the tunic for the season; Other meanings and applications of the garment; Modern Interpretation of Medieval Tunic Description of the Garment Although the garment does not have similar soc ial and historic context, the tunic is popular in the fashion world, particularly among women. The changing context also refers to the style and fabric used for making this item. Despite the shifts in trends, women’s tunic can still have elements reminding of the medieval epoch. Specific attention should be given to loose sleeves and forms concealing the silhouette. Issues to be Discussed Highlighting the differences between the medieval concept and context and the modern vision of the tunic; Discussing reasons and underpinnings for the revival of historical style; Impact of new fashion style: aestheticism vs. practical importance; Gothic Dress for Women Description of the Garment Despite the fact that the Gothic style is well distinguished from other historic styles, it contains eclectic elements (Taylor, 2004). In particular, it skillfully combines sensibility, beauty, and simplicity of the dress due to the employment of sumptuous fabrics, such as brocades and velvets. I n addition, the gothic garment was usually presented in a black color pallet, which also introduces a specific meaning and style during this period.Advertising We will write a custom essay sample on Historic and Contextual Studies specifically for you for only $16.05 $11/page Learn More Issues which need to be discussed: Gothic style as represented in various countries; Understanding the main concept of Gothic garments; Exploring the changing concepts from fifteen to seventeenth century; Modern Interpretation of Gothic Dress Description of the Garment The influence of revival of historical style constitutes the main reason for the emergence of the gothic style at the modern time (Brill, 2004). However, unlike the historical gothic style, the modern waives are more concerned with aesthetics and the revival of the romantic movements (Spooner, 2004). Issues to be discussed: Revolution and revival: exploring the shifts in fashion styles; Fashioning the self ; The related concepts: style and politics of anti-conclusion. References Brill, D. (2008). Goth Culture: Gender, Sexuality, and Style. Germany: Berg. Diehl, D., Donnelly, M. P. (2011). Medieval Celebrations: Your Guide to Planning and Hosting Spectacular Feasts, Parties, Weddings, and Renaissance Fairs. US: Stackpole Books.Advertising Looking for essay on art and design? Let's see if we can help you! Get your first paper with 15% OFF Learn More Netherton, R., Owen-Crocker, G. R. (2012). Medieval Clothing and Textiles. US: Boydell Press. Spooner, C. (2004). Fashioning Gothic Bodies. UK: Manchester University Press. Taylor, L. (2004). Establishing Dress History. UK: Manchester University Press.

The Complete IB Chemistry Syllabus SL and HL

The Complete IB Chemistry Syllabus SL and HL SAT / ACT Prep Online Guides and Tips IB Chemistry is tough. If you are reading this syllabus, I assume you are interested in potentially taking this course or you are currently enrolled in the course. In this article, I'll discuss every topic covered in IB Chemistry Standard Level and IB Chemistry Higher Level and the number of hours dedicated to each topic along with what the IB expects you to understand in each topic. IB Chemistry SL and HL Core Both IB Chemistry SL and HL cover the first 11 topics (a total of 95 hours), and HL additionally covers topics 12 to 21 (an additional 60 hours). For both levels, you'll also study one of the four options A-D (15 hours for SL, 25 hours for HL). Want to get better grades and test scores? We can help. PrepScholar Tutors is the world's best tutoring service. We combine world-class expert tutors with our proprietary teaching techniques. Our students have gotten A's on thousands of classes, perfect 5's on AP tests, and ludicrously high SAT Subject Test scores. Whether you need help with science, math, English, social science, or more, we've got you covered. Get better grades today with PrepScholar Tutors. Topic #1: Stoichiometric Relationships- 13.5 Hours for SL and HL Subtopic Subtopic Number IB Points to Understand Introduction to the particulate nature of matter and chemical change 1.1 "Atoms of different elements combine in fixed ratios to form compounds, which have different properties from their component elements." "Mixtures contain more than one element and/or compound that are not chemically bonded together and so retain their individual properties." "Mixtures are either homogeneous or heterogeneous." The mole concept 1.2 "The mole is a fixed number of particles and refers to the amount, n, of substance." "Masses of atoms are compared on a scale relative to 12C and are expressed as relative atomic mass (Ar) and relative formula/molecular mass (Mr)." "Molar mass (M) has the units g mol-1." "The empirical formula and molecular formula of a compound give the simplest ratio and the actual number of atoms present in a molecule respectively." Reacting masses and volumes 1.3 "Reactants can be either limiting or excess." "The experimental yield can be different from the theoretical yield." "Avogadro’s law enables the mole ratio of reacting gases to be determined from volumes of the gases." "The molar volume of an ideal gas is a constant at specified temperature and pressure." "The molar concentration of a solution is determined by the amount of solute and the volume of solution." "A standard solution is one of known concentration." Topic #2: Atomic Structure- 6 Hours for SL and HL Subtopic Subtopic Number IB Points to Understand The nuclear atom 2.1 "Atoms contain a positively charged dense nucleus composed of protons and neutrons (nucleons)." "Negatively charged electrons occupy the space outside the nucleus." "The mass spectrometer is used to determine the relative atomic mass of an element from its isotopic composition." Electron configuration 2.2 "Emission spectra are produced when photons are emitted from atoms as excited electrons return to a lower energy level." "The line emission spectrum of hydrogen provides evidence for the existence of electrons in discrete energy levels, which converge at higher energies." "The main energy level or shell is given an integer number, n, and can hold a maximum number of electrons, 2n2." "A more detailed model of the atom describes the division of the main energy level into s, p, d and f sub-levels of successively higher energies." "Sub-levels contain a fixed number of orbitals, regions of space where there is a high probability of finding an electron." "Each orbital has a defined energy state for a given electronic configuration and chemical environment and can hold two electrons of opposite spin." Topic #3: Periodicity- 6 Hours for SL and HL Subtopic Subtopic Number IB Points to Understand Periodic table 3.1 "The periodic table is arranged into four blocks associated with the four sub- levels- s, p, d, and f." "The periodic table consists of groups (vertical columns) and periods (horizontal rows)." "The period number (n) is the outer energy level that is occupied by electrons." "The number of the principal energy level and the number of the valence electrons in an atom can be deduced from its position on the periodic table." "The periodic table shows the positions of metals, non-metals and metalloids." Periodic trends 3.2 "Vertical and horizontal trends in the periodic table exist for atomic radius, ionic radius, ionization energy, electron affinity and electronegativity." "Trends in metallic and non-metallic behaviour are due to the trends above." "Oxides change from basic through amphoteric to acidic across a period." Topic #4: Chemical Bonding and Structure- 13.5 Hours for SL and HL Subtopic Subtopic Number IB Points to Understand Ionic bonding and structure 4.1 "Positive ions (cations) form by metals losing valence electrons." "Negative ions (anions) form by non-metals gaining electrons." "The number of electrons lost or gained is determined by the electron configuration of the atom." "The ionic bond is due to electrostatic attraction between oppositely charged ions." "Under normal conditions, ionic compounds are usually solids with lattice structures." Covalent bonding 4.2 "A covalent bond is formed by the electrostatic attraction between a shared pair of electrons and the positively charged nuclei." "Single, double and triple covalent bonds involve one, two and three shared pairs of electrons respectively." "Bond length decreases and bond strength increases as the number of shared electrons increases." "Bond polarity results from the difference in electronegativities of the bonded atoms." Covalent structures 4.3 "Lewis (electron dot) structures show all the valence electrons in a covalently bonded species." "The â€Å"octet rule† refers to the tendency of atoms to gain a valence shell with a total of 8 electrons." "Some atoms, like Be and B, might form stable compounds with incomplete octets of electrons." "Resonance structures occur when there is more than one possible position for a double bond in a molecule." "Shapes of species are determined by the repulsion of electron pairs according to VSEPR theory." "Carbon and silicon form giant covalent/network covalent structures." Intermolecular forces 4.4 "Intermolecular forces include London (dispersion) forces, dipole-dipole forces and hydrogen bonding." "The relative strengths of these interactions are London (dispersion) forces dipole-dipole forces hydrogen bonds." Metallic bonding 4.5 "A metallic bond is the electrostatic attraction between a lattice of positive ions and delocalized electrons." "The strength of a metallic bond depends on the charge of the ions and the radius of the metal ion." "Alloys usually contain more than one metal and have enhanced properties." Topic #5: Energetics/Thermochemistry- 9 Hours for SL and HL Subtopic Subtopic Number IB Points to Understand Measuring energy changes 5.1 "Heat is a form of energy." "Temperature is a measure of the average kinetic energy of the particles." "Total energy is conserved in chemical reactions." "Chemical reactions that involve transfer of heat between the system and the surroundings are described as endothermic or exothermic." "The enthalpy change (∆H) for chemical reactions is indicated in kJ mol-1." "∆H values are usually expressed under standard conditions, given by ∆H °, including standard states." Hess’s Law 5.2 "The enthalpy change for a reaction that is carried out in a series of steps is equal to the sum of the enthalpy changes for the individual steps." Bond enthalpies 5.3 "Bond-forming releases energy and bond-breaking requires energy." "Average bond enthalpy is the energy needed to break one mol of a bond in a gaseous molecule averaged over similar compounds." Want to get better grades and test scores? We can help. PrepScholar Tutors is the world's best tutoring service. We combine world-class expert tutors with our proprietary teaching techniques. Our students have gotten A's on thousands of classes, perfect 5's on AP tests, and ludicrously high SAT Subject Test scores. Whether you need help with science, math, English, social science, or more, we've got you covered. Get better grades today with PrepScholar Tutors. Topic #6: Chemical Kinetics- 7 Hours for Both SL and HL Subtopic Subtopic Number IB Points to Understand Collision theory and rates of reaction 6.1 "Species react as a result of collisions of sufficient energy and proper orientation." "The rate of reaction is expressed as the change in concentration of a particular reactant/product per unit time." "Concentration changes in a reaction can be followed indirectly by monitoring changes in mass, volume and colour." "Activation energy (Ea) is the minimum energy that colliding molecules need in order to have successful collisions leading to a reaction." "By decreasing Ea, a catalyst increases the rate of a chemical reaction, without itself being permanently chemically changed." Topic #7: Equilibrium- 4.5 Hours for SL and HL Subtopic Subtopic Number IB Points to Understand Equilibrium 7.1 "A state of equilibrium is reached in a closed system when the rates of the forward and reverse reactions are equal." "The equilibrium law describes how the equilibrium constant (Kc) can be determined for a particular chemical reaction." "The magnitude of the equilibrium constant indicates the extent of a reaction at equilibrium and is temperature dependent." "The reaction quotient (Q) measures the relative amount of products and reactants present during a reaction at a particular point in time. Q is the equilibrium expression with non-equilibrium concentrations. The position of the equilibrium changes with changes in concentration, pressure, and temperature." "A catalyst has no effect on the position of equilibrium or the equilibrium constant." Topic #8: Acids and Bases- 6.5 Hours for SL and HL Subtopic Subtopic Number IB Points to Understand Theories of acids and bases 8.1 "A Brà ¸nsted–Lowry acid is a proton/H+ donor and a Brà ¸nsted–Lowry base is a proton/H+ acceptor." "Amphiprotic species can act as both Brà ¸nsted–Lowry acids and bases." "A pair of species differing by a single proton is called a conjugate acid-base pair." Properties of acids and bases 8.2 "Most acids have observable characteristic chemical reactions with reactive metals, metal oxides, metal hydroxides, hydrogen carbonates and carbonates." "Salt and water are produced in exothermic neutralization reactions." The pH scale 8.3 "pH = − log[H+(aq)] and [H+] = 10−pH." "A change of one pH unit represents a 10-fold change in the hydrogen ion concentration [ð   »Ã°   »+]." "pH values distinguish between acidic, neutral and alkaline solutions." "The ionic product constant, ð   ¾Ã°   ¾Ã° â€˜ ¤Ã° â€˜ ¤ = [H+][OH−] = 10−14 at 298 K." Strong and weak acids and bases 8.4 "Strong and weak acids and bases differ in the extent of ionization." "Strong acids and bases of equal concentrations have higher conductivities than weak acids and bases." "A strong acid is a good proton donor and has a weak conjugate base." "A strong base is a good proton acceptor and has a weak conjugate acid." Acid deposition 8.5 "Rain is naturally acidic because of dissolved CO2 and has a pH of 5.6. Acid deposition has a pH below 5.6." "Acid deposition is formed when nitrogen or sulfur oxides dissolve in water to form HNO3, HNO2, H2SO4 and H2SO3." "Sources of the oxides of sulfur and nitrogen and the effects of acid deposition should be covered." Topic #9: Redox Processes- 8 Hours for SL and HL Subtopic Subtopic Number IB Points to Understand Oxidation and reduction 9.1 "Oxidation and reduction can be considered in terms of oxygen gain/hydrogen loss, electron transfer or change in oxidation number." "An oxidizing agent is reduced and a reducing agent is oxidized." "Variable oxidation numbers exist for transition metals and for most main-group non-metals." "The activity series ranks metals according to the ease with which they undergo oxidation." "The Winkler Method can be used to measure biochemical oxygen demand (BOD), used as a measure of the degree of pollution in a water sample." Electrochemical cells 9.2 Voltaic (Galvanic) cells "Voltaic cells convert energy from spontaneous, exothermic chemical processes to electrical energy." "Oxidation occurs at the anode (negative electrode) and reduction occurs at the cathode (positive electrode) in a voltaic cell." Electrolytic cells "Electrolytic cells convert electrical energy to chemical energy, by bringing about non-spontaneous processes." "Oxidation occurs at the anode (positive electrode) and reduction occurs at the cathode (negative electrode) in an electrolytic cell." Topic #10: Organic Chemistry- 11 Hours for SL and HL Subtopic Subtopic Number IB Points to Understand Fundamentals of organic chemistry 10.1 "A homologous series is a series of compounds of the same family, with the same general formula, which differ from each other by a common structural unit." "Structural formulas can be represented in full and condensed format." "Structural isomers are compounds with the same molecular formula but different arrangements of atoms." "Functional groups are the reactive parts of molecules." "Saturated compounds contain single bonds only and unsaturated compounds contain double or triple bonds." "Benzene is an aromatic, unsaturated hydrocarbon." Functional group chemistry 10.2 Alkanes: "Alkanes have low reactivity and undergo free-radical substitution reactions." Alkenes: "Alkenes are more reactive than alkanes and undergo addition reactions. Bromine water can be used to distinguish between alkenes and alkanes." Alcohols: "Alcohols undergo nucleophilic substitution reactions with acids (also called esterification or condensation) and some undergo oxidation reactions." Halogenoalkanes: "Halogenoalkanes are more reactive than alkanes. They can undergo (nucleophilic) substitution reactions. A nucleophile is an electron-rich species containing a lone pair that it donates to an electron-deficient carbon." Polymers: "Addition polymers consist of a wide range of monomers and form the basis of the plastics industry." Benzene: "Benzene does not readily undergo addition reactions but does undergo electrophilic substitution reactions." Topic #11: Measurement and Data Processing- 10 Hours for SL and HL Subtopic Subtopic Number IB Points to Understand Uncertainties and errors in measurement and results 11.1 "Qualitative data includes all non-numerical information obtained from observations not from measurement." "Quantitative data are obtained from measurements, and are always associated with random errors/uncertainties, determined by the apparatus, and by human limitations such as reaction times." "Propagation of random errors in data processing shows the impact of the uncertainties on the final result." "Experimental design and procedure usually lead to systematic errors in measurement, which cause a deviation in a particular direction." "Repeat trials and measurements will reduce random errors but not systematic errors." Graphical techniques 11.2 "Graphical techniques are an effective means of communicating the effect of an independent variable on a dependent variable, and can lead to determination of physical quantities." "Sketched graphs have labeled but unscaled axes, and are used to show qualitative trends, such as variables that are proportional or inversely proportional." "Drawn graphs have labeled and scaled axes, and are used in quantitative measurements." Spectroscopic identification of organic compounds 11.3 "The degree of unsaturation or index of hydrogen deficiency (IHD) can be used to determine from a molecular formula the number of rings or multiple bonds in a molecule." "Mass spectrometry (MS), proton nuclear magnetic resonance spectroscopy (1H NMR) and infrared spectroscopy (IR) are techniques that can be used to help identify compounds and to determine their structure." Additional Higher Level Topics These topics (a total of 60 hours) are only for Higher Level students. Topic #12: Atomic Structure- 2 Hours for HL Only Subtopic Subtopic Number IB Points to Understand Electrons in atoms (HL ONLY) 12.1 "In an emission spectrum, the limit of convergence at higher frequency corresponds to the first ionization energy." "Trends in first ionization energy across periods account for the existence of main energy levels and sub-levels in atoms." "Successive ionization energy data for an element give information that shows relations to electron configurations." Topic #13: The Periodic Table: Transition Metals- 4 Hours for HL Only Subtopic Subtopic Number IB Points to Understand First-row d-block elements (HL ONLY) 13.1 "Transition elements have variable oxidation states, form complex ions with ligands, have coloured compounds, and display catalytic and magnetic properties." "Zn is not considered to be a transition element as it does not form ions with incomplete d-orbitals." "Transition elements show an oxidation state of +2 when the s-electrons are removed." Coloured complexes (HL ONLY) 13.2 "The d sub-level splits into two sets of orbitals of different energy in a complex ion." "Complexes of d-block elements are coloured, as light is absorbed when an electron is excited between the d-orbitals." "The colour absorbed is complementary to the colour observed." Topic #14: Chemical Bonding and Structure- 7 Hours for HL Only Subtopic Subtopic Number IB Points to Understand Further aspects of covalent bonding and structure (HL ONLY) 14.1 "Covalent bonds result from the overlap of atomic orbitals. A sigma bond (ÏÆ') is formed by the direct head-on/end-to-end overlap of atomic orbitals, resulting in electron density concentrated between the nuclei of the bonding atoms. A pi bond (Ï€) is formed by the sideways overlap of atomic orbitals, resulting in electron density above and below the plane of the nuclei of the bonding atoms." "Formal charge (FC) can be used to decide which Lewis (electron dot) structure is preferred from several. The FC is the charge an atom would have if all atoms in the molecule had the same electronegativity. FC = (Number of valence electrons)- ½(Number of bonding electrons)-(Number of non-bonding electrons). The Lewis (electron dot) structure with the atoms having FC values closest to zero is preferred." "Exceptions to the octet rule include some species having incomplete octets and expanded octets." "Delocalization involves electrons that are shared by/between all atoms in a molecule or ion as opposed to being localized between a pair of atoms." "Resonance involves using two or more Lewis (electron dot) structures to represent a particular molecule or ion. A resonance structure is one of two or more alternative Lewis (electron dot) structures for a molecule or ion that cannot be described fully with one Lewis (electron dot) structure alone." Hybridization (HL ONLY) 14.2 "A hybrid orbital results from the mixing of different types of atomic orbitals on the same atom." Want to get better grades and test scores? We can help. PrepScholar Tutors is the world's best tutoring service. We combine world-class expert tutors with our proprietary teaching techniques. Our students have gotten A's on thousands of classes, perfect 5's on AP tests, and ludicrously high SAT Subject Test scores. Whether you need help with science, math, English, social science, or more, we've got you covered. Get better grades today with PrepScholar Tutors. Topic #15: Energetics/Thermochemistry- 7 Hours for HL Only Subtopic Subtopic Number IB Points to Understand Energy cycles (HL ONLY) 15.1 "Representative equations (eg M+(g) → M+(aq)) can be used for enthalpy/energy of hydration, ionization, atomization, electron affinity, lattice, covalent bond and solution." "Enthalpy of solution, hydration enthalpy and lattice enthalpy are related in an energy cycle." Entropy and spontaneity (HL ONLY) 15.2 "Entropy (S) refers to the distribution of available energy among the particles. The more ways the energy can be distributed the higher the entropy." "Gibbs free energy (G) relates the energy that can be obtained from a chemical reaction to the change in enthalpy (ΔH), change in entropy (ΔS), and absolute temperature (T)." "Entropy of gasliquidsolid under same conditions." Topic #16: Chemical Kinetics- 6 Hours for HL Only Subtopic Subtopic Number IB Points to Understand Rate expression and reaction mechanism (HL ONLY) 16.1 "Reactions may occur by more than one step and the slowest step determines the rate of reaction (rate determining step/RDS)." "The molecularity of an elementary step is the number of reactant particles taking part in that step." "The order of a reaction can be either integer or fractional in nature. The order of a reaction can describe, with respect to a reactant, the number of particles taking part in the rate-determining step." "Rate equations can only be determined experimentally." "The value of the rate constant (k) is affected by temperature and its units are determined from the overall order of the reaction." "Catalysts alter a reaction mechanism, introducing a step with lower activation energy." Activation energy (HL ONLY) 16.2 "The Arrhenius equation uses the temperature dependence of the rate constant to determine the activation energy." "A graph of 1/T against ln k is a linear plot with gradient – Ea / R and intercept, lnA." "The frequency factor (or pre-exponential factor) (A) takes into account the frequency of collisions with proper orientations." Topic #17: Equilibrium- 4 Hours for HL Only Subtopic Subtopic Number IB Points to Understand The equilibrium law (HL ONLY) 17.1 "Le Chà ¢telier’s principle for changes in concentration can be explained by the equilibrium law." "The position of equilibrium corresponds to a maximum value of entropy and a minimum in the value of the Gibbs free energy." "The Gibbs free energy change of a reaction and the equilibrium constant can both be used to measure the position of an equilibrium reaction and are related by the equation, ∆G ° = −RT ln(ð   ¾)" Topic #18: Acids and Bases- 10 Hours for HL Only Subtopic Subtopic Number IB Points to Understand Lewis acids and bases (HL ONLY) 18.1 "A Lewis acid is a lone pair acceptor and a Lewis base is a lone pair donor." "When a Lewis base reacts with a Lewis acid a coordinate bond is formed." "A nucleophile is a Lewis base and an electrophile is a Lewis acid." Calculations involving acids and bases (HL ONLY) 18.2 "The expression for the dissociation constant of a weak acid (Ka) and a weak base (Kb)." "For a conjugate acid base pair, Ka Ãâ€" Kb = Kw." "The relationship between Ka and pKa is (pKa = -log Ka), and between Kb and pKb is (pKb = -log Kb)." pH curves (HL ONLY) 18.3 "The characteristics of the pH curves produced by the different combinations of strong and weak acids and bases." "An acid–base indicator is a weak acid or a weak base where the components of the conjugate acid–base pair have different colours." "The relationship between the pH range of an acid–base indicator, which is a weak acid, and its pKa value." "The buffer region on the pH curve represents the region where small additions of acid or base result in little or no change in pH." "The composition and action of a buffer solution." Topic #19: Redox Processes- 6 Hours for HL Only Subtopic Subtopic Number IB Points to Understand Electrochemical cells (HL ONLY) 19.1 "A voltaic cell generates an electromotive force (EMF) resulting in the movement of electrons from the anode (negative electrode) to the cathode (positive electrode) via the external circuit. The EMF is termed the cell potential (E º)." "The standard hydrogen electrode (SHE) consists of an inert platinum electrode in contact with 1 mol dm-3 hydrogen ion and hydrogen gas at 100 kPa and 298 K. The standard electrode potential (E º) is the potential (voltage) of the reduction half-equation under standard conditions measured relative to the SHE. Solute concentration is 1 mol dm-3 or 100 kPa for gases. E º of the SHE is 0 V." "When aqueous solutions are electrolysed, water can be oxidized to oxygen at the anode and reduced to hydrogen at the cathode. "ΔG º = -nFE º. When E º is positive, ΔG º is negative indicative of a spontaneous process. When E º is negative, ΔG º is positive indicative of a non-spontaneous process. When E º is 0, then ΔG º is 0." "Current, duration of electrolysis and charge on the ion affect the amount of product formed at the electrodes during electrolysis." "Electroplating involves the electrolytic coating of an object with a metallic thin layer." The coolest club of them all. Topic #20: Organic Chemistry- 12 Hours for HL Only Subtopic Subtopic Number IB Points to Understand Types of organic reactions (HL ONLY) 20.1 Nucleophilic Substitution Reactions: "SN1 represents a nucleophilic unimolecular substitution reaction and SN2 represents a nucleophilic bimolecular substitution reaction. SN1 involves a carbocation intermediate. SN2 involves a concerted reaction with a transition state." "For tertiary halogenoalkanes the predominant mechanism is SN1 and for primary halogenoalkanes it is SN2. Both mechanisms occur for secondary halogenoalkanes." "The rate determining step (slow step) in an SN1 reaction depends only on the concentration of the halogenoalkane, rate = k[halogenoalkane]. For SN2, rate = k[halogenoalkane][nucleophile]. SN2 is stereospecific with an inversion of configuration at the carbon." "SN2 reactions are best conducted using aprotic, non-polar solvents and SN1 reactions are best conducted using protic, polar solvents." Electrophilic Addition Reactions: "An electrophile is an electron-deficient species that can accept electron pairs from a nucleophile. Electrophiles are Lewis acids." "Markovnikov’s rule can be applied to predict the major product in electrophilic addition reactions of unsymmetrical alkenes with hydrogen halides and interhalogens. The formation of the major product can be explained in terms of the relative stability of possible carbocations in the reaction mechanism." Electrophilic Substitution Reactions: "Benzene is the simplest aromatic hydrocarbon compound (or arene) and has a delocalized structure of Ï€ bonds around its ring. Each carbon to carbon bond has a bond order of 1.5. Benzene is susceptible to attack by electrophiles." Reduction Reactions: "Carboxylic acids can be reduced to primary alcohols (via the aldehyde). Ketones can be reduced to secondary alcohols. Typical reducing agents are lithium aluminium hydride (used to reduce carboxylic acids) and sodium borohydride." Synthetic routes (HL ONLY) 20.2 "The synthesis of an organic compound stems from a readily available starting material via a series of discrete steps. Functional group interconversions are the basis of such synthetic routes." "Retro-synthesis of organic compounds." Stereoisomerism (HL ONLY) 20.3 "Stereoisomers are subdivided into two classes- conformational isomers, which interconvert by rotation about a ÏÆ' bond and configurational isomers that interconvert only by breaking and reforming a bond. Configurational isomers are further subdivided into cis-trans and E/Z isomers and optical isomers." "Cis-trans isomers can occur in alkenes or cycloalkanes (or heteroanalogues) and differ in the positions of atoms (or groups) relative to a reference plane. According to IUPAC, E/Z isomers refer to alkenes of the form R1R2C=CR3R4 (R1 ≠  R2, R3 ≠  R4) where neither R1 nor R2 need be different from R3 or R4." "A chiral carbon is a carbon joined to four different atoms or groups." "An optically active compound can rotate the plane of polarized light as it passes through a solution of the compound. Optical isomers are enantiomers. Enantiomers are non-superimposeable mirror images of each other. Diastereomers are not mirror images of each other." "A racemic mixture (or racemate) is a mixture of two enantiomers in equal amounts and is optically inactive." Topic #21: Measurement and Analysis- 2 Hours for HL Only Subtopic Subtopic Number IB Points to Understand Spectroscopic identification of organic compounds (HL ONLY) 21.1 "Structural identification of compounds involves several different analytical techniques including IR, 1H NMR and MS." "In a high resolution 1H NMR spectrum, single peaks present in low resolution can split into further clusters of peaks." "The structural technique of single crystal X-ray crystallography can be used to identify the bond lengths and bond angles of crystalline compounds." Options As a part of your IB Chemistry class you'll cover an additional subject from the list below (typically your teacher chooses which subject you'll cover). Whichever option is chosen, you'll cover 5-7 topics (15 hours total) for SL and an additional 3 or 4 topics (25 hours total) for HL. Option A: Materials- 15 Hours for SL and HL Subtopic Subtopic Number IB Points to Understand Materials science introduction A.1 "Materials are classified based on their uses, properties, or bonding and structure." "The properties of a material based on the degree of covalent, ionic or metallic character in a compound can be deduced from its position on a bonding triangle." "Composites are mixtures in which materials are composed of two distinct phases, a reinforcing phase that is embedded in a matrix phase." Metals and inductively coupled plasma (ICP) spectroscopy A.2 "Reduction by coke (carbon), a more reactive metal, or electrolysis are means of obtaining some metals from their ores." "The relationship between charge and the number of moles of electrons is given by Faraday’s constant, F. "Alloys are homogeneous mixtures of metals with other metals or non-metals." "Diamagnetic and paramagnetic compounds differ in electron spin pairing and their behaviour in magnetic fields." "Trace amounts of metals can be identified and quantified by ionizing them with argon gas plasma in Inductively Coupled Plasma (ICP) Spectroscopy using Mass Spectroscopy ICP-MS and Optical Emission Spectroscopy ICP-OES." Catalysts A.3 "Reactants adsorb onto heterogeneous catalysts at active sites and the products desorb." "Homogeneous catalysts chemically combine with the reactants to form a temporary activated complex or a reaction intermediate." "Transition metal catalytic properties depend on the adsorption/absorption properties of the metal and the variable oxidation states." "Zeolites act as selective catalysts because of their cage structure." "Catalytic particles are nearly always nanoparticles that have large surface areas per unit mass." Liquid crystals A.4 "Liquid crystals are fluids that have physical properties (electrical, optical and elasticity) that are dependent on molecular orientation to some fixed axis in the material." "Thermotropic liquid-crystal materials are pure substances that show liquidcrystal behaviour over a temperature range." "Lyotropic liquid crystals are solutions that show the liquid-crystal state over a (certain) range of concentrations." "Nematic liquid crystal phase is characterized by rod shaped molecules which are randomly distributed but on average align in the same direction." Polymers A.5 "Thermoplastics soften when heated and harden when cooled." "A thermosetting polymer is a prepolymer in a soft solid or viscous state that changes irreversibly into a hardened thermoset by curing." "Elastomers are flexible and can be deformed under force but will return to nearly their original shape once the stress is released." "High density polyethene (HDPE) has no branching allowing chains to be packed together." "Low density polyethene (LDPE) has some branching and is more flexible." "Plasticizers added to a polymer increase the flexibility by weakening the intermolecular forces between the polymer chains." "Atom economy is a measure of efficiency applied in green chemistry." "Isotactic addition polymers have substituents on the same side." "Atactic addition polymers have the substituents randomly placed." Nanotechnology A.6 "Molecular self-assembly is the bottom-up assembly of nanoparticles and can occur by selectively attaching molecules to specific surfaces. Self-assembly can also occur spontaneously in solution." "Possible methods of producing nanotubes are arc discharge, chemical vapour deposition (CVD) and high pressure carbon monoxide (HIPCO)." "Arc discharge involves either vaporizing the surface of one of the carbon electrodes, or discharging an arc through metal electrodes submersed in a hydrocarbon solvent, which forms a small rod-shaped deposit on the anode." Environmental impact- plastics A.7 "Plastics do not degrade easily because of their strong covalent bonds." "Burning of polyvinyl chloride releases dioxins, HCl gas and incomplete hydrocarbon combustion products." "Dioxins contain unsaturated six-member heterocyclic rings with two oxygen atoms, usually in positions 1 and 4." "Chlorinated dioxins are hormone disrupting, leading to cellular and genetic damage." "Plastics require more processing to be recycled than other materials." "Plastics are recycled based on different resin types." Option A: Additional HL Materials Topics- 10 More Hours for HL Subtopic Subtopic Number IB Points to Understand Superconducting metals and X-ray crystallography (HL ONLY) A.8 "Superconductors are materials that offer no resistance to electric currents below a critical temperature." "The Meissner effect is the ability of a superconductor to create a mirror image magnetic field of an external field, thus expelling it." "Resistance in metallic conductors is caused by collisions between electrons and positive ions of the lattice." "The Bardeen–Cooper–Schrieffer (BCS) theory explains that below the critical temperature electrons in superconductors form Cooper pairs which move freely through the superconductor." "Type 1 superconductors have sharp transitions to superconductivity whereas Type 2 superconductors have more gradual transitions." "X-ray diffraction can be used to analyse structures of metallic and ionic compounds." "Crystal lattices contain simple repeating unit cells." "Atoms on faces and edges of unit cells are shared." "The number of nearest neighbours of an atom/ion is its coordination number." Condensation polymers(HL ONLY) A.9 "Condensation polymers require two functional groups on each monomer." "NH3, HCl and H2O are possible products of condensation reactions." "Kevlar ® is a polyamide with a strong and ordered structure. The hydrogen bonds between O and N can be broken with the use of concentrated sulfuric acid." Environmental impact- heavy metals(HL ONLY) A.10 "Toxic doses of transition metals can disturb the normal oxidation/reduction balance in cells through various mechanisms." "Some methods of removing heavy metals are precipitation, adsorption, and chelation." "Polydentate ligands form more stable complexes than similar monodentate ligands due to the chelate effect, which can be explained by considering entropy changes." Option B: Biochemistry- 15 Hours for SL and HL Subtopic Subtopic Number IB Points to Understand Introduction to biochemistry B.1 "The diverse functions of biological molecules depend on their structures and shapes." "Metabolic reactions take place in highly controlled aqueous environments." "Reactions of breakdown are called catabolism and reactions of synthesis are called anabolism." "Biopolymers form by condensation reactions and are broken down by hydrolysis reactions." "Photosynthesis is the synthesis of energy-rich molecules from carbon dioxide and water using light energy." "Respiration is a complex set of metabolic processes providing energy for cells." Proteins and enzymes B.2 "Proteins are polymers of 2-amino acids, joined by amide links (also known as peptide bonds)." "Amino acids are amphoteric and can exist as zwitterions, cations and anions." "Protein structures are diverse and are described at the primary, secondary, tertiary and quaternary levels." "A protein’s three-dimensional shape determines its role in structural components or in metabolic processes." "Most enzymes are proteins that act as catalysts by binding specifically to a substrate at the active site." "As enzyme activity depends on the conformation, it is sensitive to changes in temperature and pH and the presence of heavy metal ions." "Chromatography separation is based on different physical and chemical principles." Lipids B.3 "Fats are more reduced than carbohydrates and so yield more energy when oxidized." "Triglycerides are produced by condensation of glycerol with three fatty acids and contain ester links. Fatty acids can be saturated, monounsaturated or polyunsaturated." "Phospholipids are derivatives of triglycerides." "Hydrolysis of triglycerides and phospholipids can occur using enzymes or in alkaline or acidic conditions." "Steroids have a characteristic fused ring structure, known as a steroidal backbone." "Lipids act as structural components of cell membranes, in energy storage, thermal and electrical insulation, as transporters of lipid soluble vitamins and as hormones." Carbohydrates B.4 "Carbohydrates have the general formula Cx(H2O)y." "Haworth projections represent the cyclic structures of monosaccharides." "Monosaccharides contain either an aldehyde group (aldose) or a ketone group (ketose) and several –OH groups." "Straight chain forms of sugars cyclize in solution to form ring structures containing an ether linkage." "Glycosidic bonds form between monosaccharides forming disaccharides and polysaccharides." "Carbohydrates are used as energy sources and energy reserves." Vitamins B.5 "Vitamins are organic micronutrients which (mostly) cannot be synthesized by the body but must be obtained from suitable food sources." "The solubility (water or fat) of a vitamin can be predicted from its structure." "Most vitamins are sensitive to heat." "Vitamin deficiencies in the diet cause particular diseases and affect millions of people worldwide." Biochemistry and the environment B.6 "Xenobiotics refer to chemicals that are found in an organism that are not normally present there." "Biodegradable/compostable plastics can be consumed or broken down by bacteria or other living organisms." "Host–guest chemistry involves the creation of synthetic host molecules that mimic some of the actions performed by enzymes in cells, by selectively binding to specific guest species, such as toxic materials in the environment." "Enzymes have been developed to help in the breakdown of oil spills and other industrial wastes." "Enzymes in biological detergents can improve energy efficiency by enabling effective cleaning at lower temperatures." "Biomagnification is the increase in concentration of a substance in a food chain." "Green chemistry, also called sustainable chemistry, is an approach to chemical research and engineering that seeks to minimize the production and release to the environment of hazardous substances." Option B: Additional HL Biochemistry Topics- 10 More Hours for HL Subtopic Subtopic Number IB Points to Understand Proteins and enzymes (HL ONLY) B.7 "Inhibitors play an important role in regulating the activities of enzymes." "Amino acids and proteins can act as buffers in solution." "Protein assays commonly use UV-vis spectroscopy and a calibration curve based on known standards." Nucleic acids(HL ONLY) B.8 "Nucleotides are the condensation products of a pentose sugar, phosphoric acid and a nitrogenous base- adenine (A), guanine (G), cytosine (C), thymine (T) or uracil (U)." "Polynucleotides form by condensation reactions." "DNA is a double helix of two polynucleotide strands held together by hydrogen bonds." "RNA is usually a single polynucleotide chain that contains uracil in place of thymine, and a sugar ribose in place of deoxyribose." "The sequence of bases in DNA determines the primary structure of proteins synthesized by the cell using a triplet code, known as the genetic code, which is universal." "Genetically modified organisms have genetic material that has been altered by genetic engineering techniques, involving transferring DNA between species." Biological pigments (HL ONLY) B.9 "Biological pigments are coloured compounds produced by metabolism." "The colour of pigments is due to highly conjugated systems with delocalized electrons, which have intense absorption bands in the visible region." "Porphyrin compounds, such as hemoglobin, myoglobin, chlorophyll and many cytochromes are chelates of metals with large nitrogen-containing macrocyclic ligands." "Hemoglobin and myoglobin contain heme groups with the porphyrin group bound to an iron(II) ion." "Cytochromes contain heme groups in which the iron ion interconverts between iron(II) and iron(III) during redox reactions." "Anthocyanins are aromatic, water-soluble pigments widely distributed in plants. Their specific colour depends on metal ions and pH." "Carotenoids are lipid-soluble pigments, and are involved in harvesting light in photosynthesis. They are susceptible to oxidation, catalysed by light." Stereochemistry in biomolecules(HL ONLY) B.10 "With one exception, amino acids are chiral, and only the L-configuration is found in proteins." "Naturally occurring unsaturated fat is mostly in the cis form, but food processing can convert it into the trans form." "D and L stereoisomers of sugars refer to the configuration of the chiral carbon atom furthest from the aldehyde or ketone group, and D forms occur most frequently in nature." "Ring forms of sugars have isomers, known as ÃŽ ± and ÃŽ ², depending on whether the position of the hydroxyl group at carbon 1 (glucose) or carbon 2 (fructose) lies below the plane of the ring (ÃŽ ±) or above the plane of the ring (ÃŽ ²)." "Vision chemistry involves the light activated interconversion of cis- and trans- isomers of retinal." Option C: Energy- 15 Hours for SL and HL Subtopic Subtopic Number IB Points to Understand Energy sources C.1 "A useful energy source releases energy at a reasonable rate and produces minimal pollution." "The quality of energy is degraded as heat is transferred to the surroundings. Energy and materials go from a concentrated into a dispersed form. The quantity of the energy available for doing work decreases." "Renewable energy sources are naturally replenished. Non-renewable energy sources are finite." "Energy density = energy released from fuel volume of fuel consumed." "Specific energy = energy released from fuel mass of fuel consumed." "The effeciency of an energy transfer = useful output energy total input energy x 100%." Fossil fuels C.2 "Fossil fuels were formed by the reduction of biological compounds that contain carbon, hydrogen, nitrogen, sulfur and oxygen." "Petroleum is a complex mixture of hydrocarbons that can be split into different component parts called fractions by fractional distillation." "Crude oil needs to be refined before use. The different fractions are separated by a physical process in fractional distillation." "The tendency of a fuel to auto-ignite, which leads to â€Å"knocking† in a car engine, is related to molecular structure and measured by the octane number." "The performance of hydrocarbons as fuels is improved by the cracking and catalytic reforming reactions." "Coal gasification and liquefaction are chemical processes that convert coal to gaseous and liquid hydrocarbons." "A carbon footprint is the total amount of greenhouse gases produced during human activities. It is generally expressed in equivalent tons of carbon dioxide." Nuclear fusion and fission C.3 Nuclear fusion "Light nuclei can undergo fusion reactions as this increases the binding energy per nucleon." "Fusion reactions are a promising energy source as the fuel is inexpensive and abundant, and no radioactive waste is produced." "Absorption spectra are used to analyse the composition of stars." Nuclear fission "Heavy nuclei can undergo fission reactions as this increases the binding energy per nucleon." "235U undergoes a fission chain reaction: U235 92 + n10 → U 236 92 → X + Y + neutrons." "The critical mass is the mass of fuel needed for the reaction to be self-sustaining." "239Pu, used as a fuel in â€Å"breeder reactors†, is produced from 238U by neutron capture." "Radioactive waste may contain isotopes with long and short half-lives." "Half-life is the time it takes for half the number of atoms to decay." Solar energy C.4 "Light can be absorbed by chlorophyll and other pigments with a conjugated electronic structure." "Photosynthesis converts light energy into chemical energy: 6CO2 + 6H2O == C6H12O6 + 6O2" "Fermentation of glucose produces ethanol which can be used as a biofuel: C6H12O6 == 2C2H5OH + 2CO2." "Energy content of vegetable oils is similar to that of diesel fuel but they are not used in internal combustion engines as they are too viscous." "Transesterification between an ester and an alcohol with a strong acid or base catalyst produces a different ester: RCOOR1 + R2OH == RCOOR2 + R1OH." "In the transesterification process, involving a reaction with an alcohol in the presence of a strong acid or base, the triglyceride vegetable oils are converted to a mixture mainly comprising of alkyl esters and glycerol, but with some fatty acids." "Transesterification with ethanol or methanol produces oils with lower viscosity that can be used in diesel engines." Environmental impact- global warming C.5 "Greenhouse gases allow the passage of incoming solar short wavelength radiation but absorb the longer wavelength radiation from the Earth. Some of the absorbed radiation is re-radiated back to Earth." "There is a heterogeneous equilibrium between concentration of atmospheric carbon dioxide and aqueous carbon dioxide in the oceans." "Greenhouse gases absorb IR radiation as there is a change in dipole moment as the bonds in the molecule stretch and bend." "Particulates such as smoke and dust cause global dimming as they reflect sunlight, as do clouds." Option C: Additional HL Energy Topics- 10 More Hours for HL Subtopic Subtopic Number IB Points to Understand Electrochemistry, rechargeable batteries and fuel cells (HL ONLY) C.6 "An electrochemical cell has internal resistance due to the finite time it takes for ions to diffuse. The maximum current of a cell is limited by its internal resistance." "The voltage of a battery depends primarily on the nature of the materials used while the total work that can be obtained from it depends on their quantity." "In a primary cell the electrochemical reaction is not reversible. Rechargeable cells involve redox reactions that can be reversed using electricity." "A fuel cell can be used to convert chemical energy, contained in a fuel that is consumed, directly to electrical energy." "Microbial fuel cells (MFCs) are a possible sustainable energy source using different carbohydrates or substrates present in waste waters as the fuel." "The Nernst equation can be used to calculate the potential of a half-cell in an electrochemical cell, under non-standard conditions." "The electrodes in a concentration cell are the same but the concentration of the electrolyte solutions at the cathode and anode are different." Nuclear fusion and nuclear fission(HL ONLY) C.7 Nuclear fusion: "The mass defect (∆m) is the difference between the mass of the nucleus and the sum of the masses of its individual nucleons." "The nuclear binding energy (ΔE) is the energy required to separate a nucleus into protons and neutrons." Nuclear fission: "The energy produced in a fission reaction can be calculated from the mass difference between the products and reactants using the Einstein mass–energy equivalence relationship ð   ¸ = ð â€˜Å¡c^2." "The different isotopes of uranium in uranium hexafluoride can be separated, using diffusion or centrifugation causing fuel enrichment." "The effusion rate of a gas is inversely proportional to the square root of the molar mass (Graham’s Law)." "Radioactive decay is kinetically a first order process with the half-life related to the decay constant by the equation ð Å"† = ln 2 /ð â€˜ ¡1 ." "The dangers of nuclear energy are due to the ionizing nature of the radiation it produces which leads to the production of oxygen free radicals such as superoxide (O2-), and hydroxyl (HO ·). These free radicals can initiate chain reactions that can damage DNA and enzymes in living cells." Photovoltaic cells and dye-sensitized solar cells (DSSC)(HL ONLY) C.8 "Molecules with longer conjugated systems absorb light of longer wavelength." "The electrical conductivity of a semiconductor increases with an increase in temperature whereas the conductivity of metals decreases." "The conductivity of silicon can be increased by doping to produce n-type and p- type semiconductors." "Solar energy can be converted to electricity in a photovoltaic cell." "DSSCs imitate the way in which plants harness solar energy. Electrons are "injected" from an excited molecule directly into the TiO2 semiconductor." "The use of nanoparticles coated with light-absorbing dye increases the effective surface area and allows more light over a wider range of the visible spectrum to be absorbed." Option D: Medicinal Chemistry- 15 Hours for SL and HL Subtopic Subtopic Number IB Points to Understand Pharmaceutical products and drug action D.1 "In animal studies, the therapeutic index is the lethal dose of a drug for 50% of the population (LD50) divided by the minimum effective dose for 50% of the population (ED50)." "In humans, the therapeutic index is the toxic dose of a drug for 50% of the population (TD50) divided by the minimum effective dose for 50% of the population (ED50)." "The therapeutic window is the range of dosages between the minimum amounts of the drug that produce the desired effect and a medically unacceptable adverse effect." "Dosage, tolerance, addiction and side effects are considerations of drug administration." "Bioavailability is the fraction of the administered dosage that reaches the target part of the human body." "The main steps in the development of synthetic drugs include identifying the need and structure, synthesis, yield and extraction." "Drug–receptor interactions are based on the structure of the drug and the site of activity." Aspirin and penicillin D.2 Aspirin: "Mild analgesics function by intercepting the pain stimulus at the source, often by interfering with the production of substances that cause pain, swelling or fever." "Aspirin is prepared from salicylic acid." "Aspirin can be used as an anticoagulant, in prevention of the recurrence of heart attacks and strokes and as a prophylactic." Penicillin: "Penicillins are antibiotics produced by fungi." "A beta-lactam ring is a part of the core structure of penicillins." "Some antibiotics work by preventing cross-linking of the bacterial cell walls." "Modifying the side-chain results in penicillins that are more resistant to the penicillinase enzyme." Opiates D.3 "The ability of a drug to cross the blood–brain barrier depends on its chemical structure and solubility in water and lipids." "Opiates are natural narcotic analgesics that are derived from the opium poppy." "Morphine and codeine are used as strong analgesics. Strong analgesics work by temporarily bonding to receptor sites in the brain, preventing the transmission of pain impulses without depressing the central nervous system." "Medical use and addictive properties of opiate compounds are related to the presence of opioid receptors in the brain." pH regulation of the stomach D.4 "Non-specific reactions, such as the use of antacids, are those that work to reduce the excess stomach acid." "Active metabolites are the active forms of a drug after it has been processed by the body." Antiviral medications D.5 "Viruses lack a cell structure and so are more difficult to target with drugs than bacteria." "Antiviral drugs may work by altering the cell’s genetic material so that the virus cannot use it to multiply. Alternatively, they may prevent the viruses from multiplying by blocking enzyme activity within the host cell." Environmental impact of some medications D.6 "High-level waste (HLW) is waste that gives off large amounts of ionizing radiation for a long time." "Low-level waste (LLW) is waste that gives off small amounts of ionizing radiation for a short time." "Antibiotic resistance occurs when micro-organisms become resistant to antibacterials." Option D: Additional HL Medicinal Chemistry Topics- 10 More Hours for HL Subtopic Subtopic Number IB Points to Understand Taxol- a chiral auxiliary case study (HL ONLY) D.7 "Taxol is a drug that is commonly used to treat several different forms of cancer." "Taxol naturally occurs in yew trees but is now commonly synthetically produced." "A chiral auxiliary is an optically active substance that is temporarily incorporated into an organic synthesis so that it can be carried out asymmetrically with the selective formation of a single enantiomer." Nuclear medicine (HL ONLY) D.8 "Alpha, beta, gamma, proton, neutron and positron emissions are all used for medical treatment." "Magnetic resonance imaging (MRI) is an application of NMR technology." "Radiotherapy can be internal and/or external." "Targeted Alpha Therapy (TAT) and Boron Neutron Capture Therapy (BNCT) are two methods which are used in cancer treatment." Drug detection and analysis (HL ONLY) D.9 "Organic structures can be analysed and identified through the use of infrared spectroscopy, mass spectroscopy and proton NMR." "The presence of alcohol in a sample of breath can be detected through the use of either a redox reaction or a fuel cell type of breathalyser." Practical Scheme of Work You also need to complete experiments and experimental reports as a part of any IB Science course. For SL, there is 40 hours of material. For HL, there is 60 hours of material. Here are the activities: Practical activities- 20 hours for SL and 40 hours for HL Lab work in class counts towards these hours Individual investigation (internal assessment-IA)- 10 hours for SL and HL A lab project along with a report that counts as 20% of your IB exam scores (written exam counts for the other 80%) Group 4 Project- 10 hours for SL and HL Students are separated into groups and must conduct an experiment and write a report. Hopefully, yours won't end in smoke! What’s Next? Looking for notes and a study guide for IB Chemistry? We have a complete guide to IB Chemistry, a breakdown (so to speak) of what enzymes are and what they do, and specific tips for balancing chemical equations. You can also find out where to buy past IB Chemistry papers here! Curious about how you can use your chemistry knowledge outside the classroom? Try out these three recipes for slime and see which combination of ingredients has what effect! And if after doing this your kitchen mysteriously comes down with a case of the clogged drains, you'll want to learn how to use muriatic acid safely and effectively to solve the problem. Are you hoping to squeeze in some extra IB classes? Learn about the IB courses offered online. Studying for the SAT? Check out our complete guide to the SAT. Taking the SAT in the next month? Check out our guide to cramming. Not sure where you want to go to college? Check out our guide to finding your target school. Want to improve your SAT score by 160 points or your ACT score by 4 points? We've written a guide for each test about the top 5 strategies you must be using to have a shot at improving your score. Download it for free now:

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