Science, asked by rajeshrajpoot4988, 9 months ago

how can we say that a chemical reaction has taken place?​

Answers

Answered by Anonymous
5

ANSWER:

There are four signs that a chemical reaction has occurred: a change in color, a change in temperature, formation of a gas or formation of a precipitate.

Answered by shamagoyal1978
3

Answer:

If the energy is released and a new product is formed then we can that a chemical reaction has took place

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