How can you tell whether a change in matter is caused by a chemical reaction? ​

Potential signs that chemical reactions have occurred include a change in color, change in temperature, formation of a gas, and formation of a precipitate.

Gas Bubbles Appear. Gas bubbles appear after a chemical reaction has occurred and the mixture becomes saturated with gas.

Formation of a Precipitate.

Color Change.

Temperature Change.

Production of Light.

Volume Change.

Change in Smell or Taste.

Explanation:

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