Unit 2: The Changes during Reactions should cover the following topics:
The Physical change,The chemical change like combustion
Definition of the terms “catalyst” and “precipitate”
Writing word and symbol equations for the chemical reactions
Importance of the subscripts (and coefficients)and state symbols in equations
The energy changes during the course of reaction
Types of chemical reaction: displacement reaction, decomposition, neutralization, synthesis, combustion reaction, endothermic and exothermic reactions
Identify the names and formulas of the common laboratory acids and bases.
Read Unit 1: Basic Atomic Structure here.