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which of the following are chemical changes? A) Cooking of Food B) Digestion of Food C) Freezing of water D) Water is heated up

Correct Answer: A & B

Explanation:

A) Cooking of Food  ------ Chemical Change


B) Digestion of Food ----- Chemical Change


C) Freezing of water ----- Physical Change


D) Water is heated up ---- Physical Change


because here the chemical composition of the substance changes in A & B only.


 


Since we know that, If the chemical composition is changing then it is a chemical change and if the chemical composition is remaining the same, then it is a physical change.


 


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