Question

How did you know that chemical reaction took place? Cite evidences of chemical reaction based on the result of the experiment. Activity : Dancing rice experiment

Answer 1

Answer:

we can conclude that a chemical reaction has taken place if

temperature is changed

change of color in the solution

formation of ppt

formation of new substances

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Answer 2

Answer:we can say that a chemical reaction has take place.

Explanation: If the temp changes

Formation of ppt

Colour changes

Their states changes and forms new substance