Heat of Fusion
The energy needed to change a substance from a liquid to a gas is called the enthalpy (or heat) of vaporization.
The amount of energy needed to change a material from a solid to a liquid is called the latent heat of fusion. This value differs for different substances, but for water, it is 334 joules per gram, while for propane it is 93 joules per gram.
Thermal Energy
The amount of heat needed to change 1 kg of a material from liquid to vapor at a constant temperature is called the latent heat of vaporization. This value varies depending on the material and is typically provided in joules/kg.
thermol
energy
It is the latent heat of liquefaction.
endothermic
The energy needed to change a material from solid to liquid is called the heat of fusion or melting point. This energy is required to overcome the intermolecular forces holding the solid together so that it can transition into a liquid state. The amount of energy needed varies depending on the specific material.
Usually heat is needed. but this can happen through osmosis as well.
either potential or kinetic
The energy needed to change a substance from a liquid to a gas is called the enthalpy (or heat) of vaporization.
You can add heat and cause liquid to gasify. Or you can decrease the pressure in the system and cause liquid to gasify. Note that you may gasify liquid and leave suspended or dissolved solids behind. More heat or pressure may be required to convert these remnants to liquid and then gas.
heat of vaporization
liquid
The amount of energy needed to change a material from a solid to a liquid is called the latent heat of fusion. This value differs for different substances, but for water, it is 334 joules per gram, while for propane it is 93 joules per gram.
Thermal Energy