Section 1 Chemical Changes - Richmond County School System
Section 1
Chemical Changes
Essential Questions
What are the reactants and products in a chemical
reaction?
Is mass conserved in a chemical reaction?
Why are chemical equations important?
How do you balance a chemical equation?
Review Vocabulary
chemical formula: shorthand that gives the elements
in a compound and their ratios
Review Vocabulary
chemical formula: shorthand that gives the elements
in a compound and their ratios
Law of Conservation of Mass
The Law of Conservation of Mass states: that
mass is neither created nor destroyed in
any chemical reaction. Therefore balancing
of equations requires the same number of
atoms on both sides of a chemical reaction.
The number of atoms in the Reactants must
equal the Number of atoms in the Products
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