Science, asked by parikshit2191, 1 year ago

define chemical reaction. What observation hlep you to determine whether a chemical reaction takes place

Answers

Answered by MяMαgıcıαη

2

Answer:

a reaction is a process in which new substances with new properties are formed.

following observations help us to determine that a chemical reaction is taking place.

1. change in state

2. change in smell.

3. change in temperature.

4 .evolution of gas

5. formation of precipitate

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