This study guide is written for the fifth edition of Steve Zumdahl's Chemistry textbook; the section descriptions and table and figure references match. However, there are a few instances in the guide when the approach in this guide differs from that in the textbook. Both ways have proven successful and you are encouraged to use the method that works best for you. There are over 1500 problems, many of them worked out, in the guide. Ideally, you will read the textbook, do the problems, then read this Study Guide and do its problems. The guide is not a substitute for the text. the textbook has a richness of information that the guide cannot approach. However, the guide can enrich and deepen your understanding. Please use it with that in mind.