Question

Give five uses of chemical changes . Plz give ur answer in points and in easy language.

Answer 1

chemical change is a permanent change where formation of new substance takes place.

* preparation of food is chemical change through which we get energy
* respiration is also a chemical change. without respiration we couldn't survive.
*burning of fuel in is also chemical change which helps in functioning of machines.
*chemical change involves in absorption of energy.
* it plays an important role in our life

Answer 2

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Another sign of a chemical change is the release or gain of energy by an object. Many substances absorb energy to undergo a chemical change. Energy is absorbed during chemical changes involved in cooking, like baking a cake. Energy can also be released during a chemical change.