Science, asked by mohdrafi9910, 4 months ago

Give two obres vation that help to detarmine whether a chenical reaction has taken place ?

Answers

Answered by Anonymous

4

Explanation:

•Following are the observations to determine whether the chemical reaction has taken place or not:

•Change in colour

•Evolution of gas

•Changee in temperature

•Formation of precipitate

•Change in pH

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