Thermal Energy
The energy needed to change a substance from a liquid to a gas is called the enthalpy (or heat) of vaporization.
Heat of Fusion
Molar heat of fusion: the heat (enthalpy, energy) needed to transform a solid in liquid (expressed in kJ/mol). Molar heat of vaporization: the heat (enthalpy, energy) needed to transform a liquid in gas (expressed in kJ/mol).
All liquids have an eventual boiling point, some of them are just incredibly hard to do because of the extreme amount of heat needed. Boiling a liquid is just the process by which atoms of the substance are heated enough to have enough energy to break free from the molecular bonds of the surface of the liquid and float into the air as a gas.
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energy
The energy needed to change a substance from a liquid to a gas is called the enthalpy (or heat) of vaporization.
Heat of vaporization or enthalpy of vaporization. It is the additional energy, per unit mass, required after vaporization temperature (boiling point) is reached, to accomplish the change in state, from liquid to gas.
Latent heat is the measurement of energy needed to change the state of a substance at its melting point or boiling point. The latent heat of fusion of water is the amount of energy needed to change a fixed amount of water from a solid to liquid at 0 degrees C. this works out to be more than 800KJ of heat energy. The latent heat of vaporization of water is the amount of energy needed to change a fixed amount of water from a liquid to a gas at 100 degrees C. this is more than 1200KJ of heat needed to be absorbed.
It is the latent heat of liquefaction.
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endothermic
thermal energy is needed to do that job. as opposed to mechanical potential or chemical energies.
heat is a mesure of energy the more energy the hotter it is so depending on its melting point is how much energy/heat is needed
Usually heat is needed. but this can happen through osmosis as well.
Heat of Fusion
Molar heat of fusion: the heat (enthalpy, energy) needed to transform a solid in liquid (expressed in kJ/mol). Molar heat of vaporization: the heat (enthalpy, energy) needed to transform a liquid in gas (expressed in kJ/mol).