Chemistry, asked by mvramana4045, 1 year ago

State any two observationa in an activity which may suggest that a chemical reaction has take place give example in spot if your answer

Answers

Answered by hp780
1

here is your answer

1)change in temperature

example. when HCL is added to zinc granules then the temperature of the mixture increases does we can say that a chemical reaction has taken place .

2)evolution of gas

example when acids react with metals they give hydrogen gas

hope this will help you

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