Question

heat energy is observed during the transformation of ice into water and water into vapour

Answer 1

From, Ice To water ⇒The amount of the Heat Energy supplied at a constant temperature when Ice will changes to water is called as the Latent heat of Melting.

For water, Latent heat of Melting is 336 kJ/kg.

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From Water to Vapor ⇒ Also, the amount of the Heat energy required to convert the Water into water vapor at a Constant temperature is called as the Latent Heat of the Vaporization.

For water, It is 2260 kJ/kg.

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The Formula to Calculate the Latent heat is,

Q = mL,

here m is the mass of the substances undergoing change in the state, L is the Latent Heat, and Q is the amount of Heat energy released.

These Heat energy does not depends upon the temperature, these phenomenon occurs at a constant temperature. During these Changes of state, average kinetic energy does not changes because kinetic energy is the measure of absolute temperature, and it does not changes during these process.

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Answer 2

Answer:

Yes heat energy is absorbed during the transformation of ice into water and water into vapour and this hidden heat which is absorbed during transformation is called latent heat .