This is Ch 4 in AP Chemistry. This chapter needs to be supplemented now or sometime during the year with all of the rules for types of reactions. There is a pre-AP flipchart that covers most of these. In Chapter 4, students learn about Molarity, dilutions, solubility rules, electrolytes, oxidation numbers, and redox reactions. There is a note packet that can be downloaded that allows students to follow along and solve the problems.