Heat-of-fusion



noun, Physics.
1.
the heat absorbed by a unit mass of a given solid at its melting point that completely converts the solid to a liquid at the same temperature: equal to the heat of solidification.
heat of fusion
The amount of heat required to convert a solid at its melting point into a liquid without an increase in temperature. Liquids release the same amount of heat when they solidify. See also heat of vaporization.

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  • Heat of reaction

    noun 1. (chem) the heat evolved or absorbed when one mole of a product is formed at constant pressure

  • Heat-of-solidification

    noun, Physics. 1. the heat liberated by a unit mass of liquid at its freezing point as it solidifies: equal to the heat of fusion.



  • Heat of solution

    noun 1. (chem) the heat evolved or absorbed when one mole of a substance dissolves completely in a large volume of solvent

  • Heat-of-sublimation

    noun, Physics. 1. the heat absorbed by one gram or unit mass of a substance in the process of changing, at a constant temperature and pressure, from a solid to a gaseous state. Compare (def 10).



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