If you need to know it, it’s in this book. Cracking the AP Chemistry, 2012 Edition, includes:

   • 2 full-length practice tests with detailed explanations
   • Review of key equations, laws, and formulas
   • Helpful tables, charts, and diagrams
   • Detailed walk-through for how to write a high-scoring essay
   • Updated strategies which reflect the AP test scoring change
   • Accessible and engaging subject review of all topics, from atomic structure to thermodynamics