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Chemistry

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One of the signs of a chemical reaction taking place is:

Answer :

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Answer:

Precipitates indication release of gas

Or just vapor-again indictaing release of gas

Change in melting/boiling point, change in pH

Change in temperature

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Answer:

formation of precipitate
change in state
change in colour
evolution of a gas
change in temperature

Explanation:

these signs show that the chemical reaction has taken place.

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