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What are 3 signs that a chemical reaction is happening, what tells you that this is definitely a chemical reaction?
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What are 3 signs that a chemical reaction is happening, what tells you that this is definitely a chemical reaction?

User Andre Carrera
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Answer:

A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change

User QuentinC
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