Question

when we can say that chemical reaction take place​

Answer 1

Answer:

Recognizing Chemical Reactions:-

1. A change of color occurs during the reaction.

2. A gas is produced during the reaction.

3. A solid product called a precipitate is produced in the reaction.

4. A transfer of energy occurs as a result of the reaction.

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Answer 2

Let's start with the idea of a chemical reaction. Reactions occur when two or more molecules interact and the molecules change. Bonds between atoms are broken and created to form new molecules. That's it.

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