Answer:
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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