Class 9 Chemistry Matter In Our Surroundings Latent heat of fusion

Latent heat of fusion

During the melting of solid, the temperature remains the same. The heat gets used up in overcoming the forces of attraction between the particles of matter. The heat energy is being absorbed by solid ice without any rise in temperature. This heat is regarded to be hidden in the contents of the container and is called latent heat.

Fig. Heating of ice to convert it into liquid

It can be further defined as follows:

The amount of energy needed for the conversion of 1kg of solid to liquid at atmospheric pressure at its melting point is known as the latent heat of fusion.

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