Question

Why does the temperature of a substance remain constant during the melting point or boiling point?

Answer 1

bcz the temperature is used up in changing the state of the matter .i, e the heat energy is converted into kinetic to overcome the force of attraction between the particles.

Answer 2

Heya ......!!!!

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QUESTION
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Why does the temperature of a substance remain constant during the melting
And boiling point?

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ANSWER
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Here the phase transition that is SOLID &LIQUID

SOLID TO LIQUID it is melting and LIQUID TO VAPOUR it is boiling.so to change from one phase to another heat is being totally utilised .and hence there is no change in rise in temperature.and this temperature remains constant

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HOPE IT HELPS