<p>Memorize general solubility rules (nitrate and ammonia compounds are always soluble, etc.). That’s it.</p>
<p>Know the periodic trends fairly well (first ionization energy, electron affinity, and electronegativity decrease down a group and increases along a period, while ionic radius increase down a group and decrease along a period, etc. It is helpful to understand the trends rather than just memorize them.), understanding stoichiometry very, very well, and understand the concept of equilibrium and LeChatelier’s principle. If you have time, learn about the gas laws (the ideal gas law and the combined gas law, in particular). After all of that, learn about acids and bases (know the difference between Arrhenius, Bronsted-Lowry, and Lewis acids and bases, and understand titrations).</p>
<p>If you master all of that, you’re guaranteed at least a 550. </p>
<p>After you have all of that down, focus on learning little details that will boost your score. Electrochemistry is rarely on the SAT, but understanding the concepts of oxidation states and how to assign them is very helpful. For organic chemistry, you aren’t really required to know very much. Just know the difference between saturated and unsaturated hydrocarbons, and you should be fine. Also study different types of reactions (synthesis, decomposition, redox, etc.).</p>
<p>Take a practice test on Sparknotes’ website for free. They are very, very, very slightly harder than the real test, and they should give you a good indication of what your score should be. The PR book is only slightly easier than the real thing for the chem test.</p>
<p>Only you are capable of determining whether or not you are capable of taking the SAT in a month. Judging by the digits in your username, I would say that you are a sophomore, and so you still have tons of time to worry about the SAT, let alone about the SAT subject tests.</p>