Question

Why is the temperature of a substance constant at its melting point; even though heat is added to it?​

Answer 1

Answer:

The 'temperature of a substance' remains constant during its melting and boiling point because the change in any state of matter as n solid to liquid or the liquid to a gas involves crossing the 'latent heat of fusion' which causes a change in the intermolecular spacing of the molecules in the substance

Explanation:

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Answer 2

The temperature of a substance is contast when heated because of the process of 'latent heat of vapourisation' it absorbs the heat. The heat so absorbed is used or consumed in changing the state of that substance.

Latent heat of vapourisation is the amount of heat energy used to convert 1kg of liquid into gaseous state at the atmospheric temperature at its heating point

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