What is the difference between evaporation and boiling?

Both evaporation and boiling are a process where a liquid change state into a gas.

Boiling happens to all of a liquid at once and occurs only when a liquid is heated to one specific temperature, it's boiling point. 

Evaporation can happen in a liquid at any temperature below the boiling point of the liquid, but it can only happen to the particles at the surface of the liquid.

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Answered by Louis D. Physics tutor

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