The amount of heat necessary to transform a liquid at a given temperature into a gas of the same temperature, or the amount of heat needed to be taken away from a gas of a given temperature to transform it into a liquid of the same temperature.
is the amount of energy absorbed during vaporization and is equivalent to the energy released during condensation.
A characteristic amount of heat that is absorbed or given off while a standard amount of a material changes state between liquid and vapor, without changing the temperature.
The heat that changes the physical state of a substance from a liquid to a vapor, or from a vapor to a liquid; no temperature change is shown by a thermometer during the conversion process.
Amount of heat required per pound of a substance to change its state from a liquid to a gas.
The quantity of heat absorbed by a substance when converted from a liquid to a gas.
The quantity of heat produced to change a unit weight of a liquid to vapor with no change in temperature.
