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What are the four signs of a chemical reaction

What are the four signs of a chemical reaction
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What are the four signs of a chemical reaction

User Shalita
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Answer:

Bubbling, color change, maybe a change of temperature, or formation of gas.

User Shalafi
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Answer: Conditions of a chemical change are: Color change, formation of precipitate, formation of a gas, odor change, and temperature.

User Niek Tuytel
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