Question

what are the characteristics of chemical reactions

Answer 1

The characteristics of a chemical reaction are :

Evolution of gas.

Formation of a precipitate.

Change in color.

Change in temperature.

Change in state.

Formation of new substances.

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Answer 2

Answer:

1. Evolution of gas.

2. Formation of a precipitate.

3. change in colors.

4. change in temperature.

5. change in state.

6. Formation of new substances.