It depends on the liquid you've got. But it's called the Latent Heat of Vapourisation
The heat energy needed to change a liquid to gas while the temperature stays the same is called the heat of vaporization. This energy is used to overcome the intermolecular forces holding the liquid molecules together and convert them into a gas. It is a phase change process that occurs at the boiling point of the substance.
The latent heat of vaporization
When energy is added to a liquid causing it to change into a gas, it is called vaporization or evaporation. This process involves the liquid molecules gaining enough energy to break free from the attractions holding them together in the liquid phase and transition into the gaseous phase.
The latent heat of vaporization indicates the amount of heat energy required to change one unit of mass of a substance from liquid to gas at constant temperature. It is a measure of the strength of the intermolecular forces holding the liquid together.
The change from liquid to a gas is called vaporization or evaporation. This process occurs when a liquid's molecules gain enough energy to overcome the attractions holding them together in the liquid state, allowing them to move freely as a gas.
The energy needed to change a substance from a liquid to a gas is called the enthalpy (or heat) of vaporization.
Thermal Energy
endothermic
The energy needed to go from a liquid to a gas is referred to as heat of vaporization.
Usually heat is needed. but this can happen through osmosis as well.
The process by which radiant energy from the sun causes a liquid to change into a gas is called evaporation. When sunlight shines on a liquid, it provides the energy needed to break the bonds holding the liquid molecules together, allowing them to escape into the air as gas.
thermal energy is needed to do that job. as opposed to mechanical potential or chemical energies.
cchemical change and energy change also the change of a gas to a liquid
The heat energy needed to change a liquid to gas while the temperature stays the same is called the heat of vaporization. This energy is used to overcome the intermolecular forces holding the liquid molecules together and convert them into a gas. It is a phase change process that occurs at the boiling point of the substance.
The amount of energy required to turn a mole of a liquid into a gas
Heat
Gas to liquid change releases energy.