Chemistry, asked by cosmosaditya3646, 11 months ago

Q9. State any two observations in an activity suggesting the occurrence of a chemical reaction.

Answers

Answered by mathwiz86
13

eg. burning of a candle. It shows both physical and chemical changes. Since during burning it produces gas and ash which is a new product

Answered by mateen69
10

Answer:

1.evolution of gas

2. change in colour

hope it helps

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