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Last edited 29 Aug 2018
However, when a substance changes state, such as from a solid to a liquid, a liquid to a gas or vice versa, this change requires the addition or removal of heat energy, but does not result in a change in the temperature of the substance. This is referred to as latent heat.
There are three categories of latent heat:
- Latent heat of fusion: When a substance changes from solid to liquid (or back).
- Latent heat of vaporisation: When a substance changes from liquid to gas (or back).
- Latent heat of sublimation: When a substance changes solid to gas (or back).
 Find out more
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