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What are the signs of a chemical reaction?

User Gop
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2 Answers

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Color Change.
Production of an odor.
Change of Temperature.
Evolution of a gas (formation of bubbles)
Precipitate (formation of a solid)
User Emmychan
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There are five signs of a chemical change:

Color Change.

Production of an odor.

Change of Temperature.

Evolution of a gas (formation of bubbles)

Precipitate (formation of a solid)

hope it help! and have a good day :)

User Skozz
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