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All the following are signs of a chemical reaction, except A. a change in color or odor. B. a release of gas. C. a change of state. D. a change in energy.
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All the following are signs of a chemical reaction, except

A. a change in color or odor.
B. a release of gas.
C. a change of state.
D. a change in energy.

User Brian Hawkins
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2 Answers

4 votes
C. a change of state.

Signs of a chemical reaction include;
Change of color
formation of gas
change of temperature
Precipitate formation
Energy production.
User Enkows
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2 votes
C. a change of state. It can be a physical or a chemical state of change.
User Leo Zhu
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