<p>OK, SAT Chem is less about the actual theory, which is simple enough. It's about the style of the test. (TTCE's and the like). If you're going for an 800 (I was too. :)), then the primary aim is to take as many practice tests as you can. That's the only way you'll understand the rhythm of the test, which is a bit different from the other SAT's. Other than that, an 800 is certainly possible without books, but you'll have to get some practice tests from elsewhere...</p>