Pay careful attention during chemistry labs to prepare for the test.
The SAT II subject test for chemistry consists of 85 multiple-choice questions with a possible score of between 200 and 800 points. The 60-minute test uses the metric system and includes a periodic table but does not include any other equations or allow usage of a calculator.
Matter
The Sat II test for chemistry focuses greatly on the structure and states of matter. About 25 percent of the test covers the structure of matter while about 16 percent of the test covers states of matter. Structure of matter deals with what atoms look like, how they bond and pair and molecular shapes. The more atoms bonded, the more complex the shape. Common shapes include linear, triagonal planer and tetrahedral. You must now every shape, its angles and how many bonds are connected to the central atom. States of matter deals with boiling and melting points and the differences between solids, liquids and gases.
Reaction and Equations
About 14 percent of the test covers reaction types. This includes nuclear reactions and what happens during a chemical reaction to change atoms. Nuclear reaction questions may deal with radioactivity, half-lives and the difference between fission and fusion. About 5 percent of the test deals with equilibrium, sometimes known as balancing equations. It also deals with rate of reactions, or how fast reactions occur given a set of circumstances.
Stoichiometry and Thermochemistry
Stoichiometry deals with the math of equations. It is a part of balancing equations, and it involves calculation of how much of one substance an equation forms. In order to understand stoichiometry, you must know the ideal gas law and understand molecular mass. Thermochemisty deals with the release of energy during an equation. Both of these concepts typically deal with mathematical concepts. About 14 percent of the test deals with stoichiometry and about 6 percent of the test deals with thermochemisty.
Descriptive and Laboratory Chemistry
Descriptive chemistry involves the physical properties of chemicals, such as their appearance, smell and temperature. Laboratory chemistry deals with lab safety, appropriate lab procedures and may include diagrams of experiments or equipment. Descriptive chemistry makes up about 12 percent of the test while laboratory chemistry makes up about 8 percent of the test. These two subjects are best studied for during labs and practical exams, in which you can view chemicals and watch reactions.
Forumlas
The only item allowed in the Sat II test for chemistry is a pencil and eraser. Though the test includes a periodic table, it does not include any of the formulas you need to know to create equations or determine molecular mass. Memorize Boyle's law and the ideal gas equation. For an easier time, write these equations down on the scratch paper as soon as you enter the test.
Tags: deals with, percent test, About percent, about percent, About percent test