Question

1. ice melts
2.water is boiling
3. water is converted into ice
4. formation of water vapour

Heat absorbed | heat is given out
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Answer 1

1. heat is absorbed
2.heat is absorbed
3. heat is given out
4. heat is absorbed

Answer 2

1. Heat is absorbed by ice.

2. Heat is absorbed by water.

3. Heat is given out by water.

4. Heat is given out by water.

In all the cases above, latent heat is either absorbed or released in order to bring about change in the state of water with raising its initial temperature. Actually, the term 'latent' means 'hidden'. Latent heat is the heat which is either absorbed or released by a matter to change its state without rising its temperature.


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