Why Is Energy Required For The Heating Or Boiling Process?

I'm new.


Answer:
"For every action is an opposite and equal reaction" This very well known statement should be a clue to why, as the boiling of a liquid requires a stimulus for the molecules to become excited enough to become steam, which itself give of energy as heat. (Very basic but you should catch what i mean)
Heat is itself a form of energy. You need to use energy for boil production. There has to be something which makes the molecule to move faster and quicker. For this purpose, energy is required to break free from respectively other and to exceed the atmospheric pressure pushing down on the liquid.

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