Unit 2: The Changes during Reactions

Unit 2: The Changes during Reactions should cover the following topics:

The law of conservation of mass

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.

Balancing chemical equations

Read Unit 1: Basic Atomic Structure here.

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