Chapter 6 Chemical Reactions Section 3 Balancing Equations p. 198

Understand how to balance a chemical equation Objectives Understand how to balance a chemical equation

2 H2 O2 2 H O 2 I. Describing A. Chemical Equations describe reactions B. Balancing accounts for the law of conservation of mass 2 H2 O2 2 + H O  2

II. Determining mole ratios A. Law of Definite Proportions A compound always contains the same elements in the same proportions, regardless of how it is made or how much is formed B. Mole ratios come from balanced equations

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