Respuesta :
It is used for the phase change during energy added.
- A phase change is a physical process in which a substance goes from one phase to another. Usually, the change occurs when adding or removing heat at a particular temperature, known as the melting point or the boiling point of the substance.
- The melting point is the temperature at which the substance goes from a solid to a liquid (or from a liquid to a solid). The boiling point is the temperature at which a substance goes from a liquid to a gas (or from a gas to a liquid).
- The nature of the phase change depends on the direction of the heat transfer. Heat going into a substance changes it from a solid to a liquid or a liquid to a gas. Removing heat from a substance changes a gas to a liquid or a liquid to a solid.
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