The SAT II Chemistry test is written to test your understanding of the topics of chemistry that are typically taught in a one-year college-preparatory-level high school chemistry course. Well, math and chemistry go hand in hand, right? You might be surprised, then, to learn that you aren't allowed to use a calculator on the SAT II Chemistry test. The math you'll need to do on the test never goes beyond simple arithmetic and manipulation of equations, which is good news for you—you won't be a victim of careless errors made on your calculator. That said, you should be able to solve problems using ratios, direct and inverse proportions, scientific notation, and some simpler exponential functions. Since the test is an hour long, this means you have an average of 42 seconds to answer each of the 85 questions—the people at ETS realize that isn't enough time to delve into problems involving simultaneous equations or complex algebra. They're more interested in testing your grasp of the basic concepts of chemistry. If you've grasped these concepts, your weakness in math problem solving isn't going to hurt you. You will, however, be provided with a simple periodic table. This periodic table will probably look more bare-boned than the one you're used to using: it will have only the symbols of the elements along with their atomic numbers and masses. Now let's get into the nuts and bolts of what you'll see on the exam. ETS provides the following breakdown of the test, covering eight basic categories, and as you can see, we've arranged the content review in this book according to ETS's outline:Their TopicOur SectionApproximate % of the test devoted to these topics.Approximate no. of questions you’ll see on these topics.
Structure of Matter Includes atomic theory and structure, chemical bonding, and molecular structure; nuclear reactionsStructure of Matter2521
States of Matter Includes kinetic molecular theory of gases, gas laws, liquids, solids, and phase changes; solutions, concentration units, solubility, conductivity, and colligative propertiesStates of Matter1513
Reaction Types Includes acids and bases, oxidation-reduction, and precipitationReaction Types1412
Stoichiometry Includes the mole concept, Avogadro’s number, empirical and molecular formulas, percentage composition, stoichiometric calculations, and limiting reagentsStoichiometry1210
Equilibrium and Reaction RatesIncluding gas equilibria, ionic equilibria, Le Chatelier’s principle, equilibrium expressions; factors affecting rate of reactionEquilibrium and Reaction Rates76
Thermodynamics Includes energy changes in chemical reactions and physical processes, Hess’s law, and randomness Thermodynamics65
Descriptive ChemistryIncludes physical and chemical properties of elements and their more familiar compounds, chemical reactivity and products of chemical reactions, simple examples from organic chemistry and environmental chemistryDescriptive Chemistry1311英语作文
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