The question is a bit ambiguous. It seems like you're asking about the change of state from liquid to gas, which is called vaporization.

Here's a breakdown:

* Liquid to gas: This is called vaporization. It can happen in two ways:

* Evaporation: This occurs at the surface of a liquid and happens slowly at any temperature.

* Boiling: This occurs throughout the liquid at a specific temperature called the boiling point.

* Gas to liquid: This is called condensation.

Let me know if you had something else in mind!