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Chemical Reactions

Published on Dec 07, 2015

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1.

Chemical Reactions

By: Mrs. Lowery
Photo by lindes
2.

Evidence of a chemical reaction or change

3.

1. Color Change

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2. Energy change

(Usually temperature)
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3. Precipitate

Formation of a solid
6.

4. Gas is produced

7.

Representing Chemical Changes: Chemical Equations

8.

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  • 6H2O + 6CO2 --> 6O2 + C6H12O6
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Reactants

What goes in?
10.

Products

What is produced?
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  • 6H2O
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Coefficient: # of molecules

13.

Subscript: # of atoms in a molecule

Photo by Leo Reynolds
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Photo by cinaflox
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Photo by fdecomite
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  • 6H2O
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  • 3CH4
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Balance

What goes in must come out
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jes lowery