The Language of Chemical Reactions · Chemical Reactions

Balancing and Conservation of Mass

Applying the Law of Conservation of Mass to ensure chemical equations are mathematically accurate.

Key Questions

  1. 1Why is it illegal to change subscripts when balancing a chemical equation?
  2. 2How does a balanced equation reflect the conservation of matter at the particle level?
  3. 3What happens to the mass of a system in an open versus closed container?

Common Core State Standards

HS-PS1-7
Grade: 9th Grade
Subject: Chemistry
Unit: The Language of Chemical Reactions
Period: Chemical Reactions

Suggested Methodologies

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