Standard Science Primary 4 Energy

What happens to a block of ice when it gains heat?

A It contracts and turns into gas.
B Its temperature stays at 0°C until it all melts.
C It expands and remains solid.
D Its temperature rises immediately while melting.
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Worked Solution

Step 1: Melting is the process of a solid gaining heat to become liquid. Step 2: For pure substances like ice, the temperature remains at the melting point (0°C) during the change of state.

Correct answer: Its temperature stays at 0°C until it all melts.

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