Question

. Under what conditions heat can be given to a substance without raising its temperature?
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Answer 1

Answer:

When the substance is at its boiling or melting point, heat can be given to it without raising it's temperature. This is so because the heat supplied is used in changing the phase of the substance (liquid to gas or solid to liquid) and there isn't a change in its temperature.

Answer 2

Answer:

When the substance is at its boiling or melting point, heat can be given to it without raising it's temperature. This is so because the heat supplied is used in changing the phase of the substance and there isn't a change in its temperature.