Standard Science Primary 4 Energy

A beaker of ice at 0°C is heated until it turns completely into water at 0°C. Which statement is correct about the heat and temperature?

A The temperature increased as it gained heat.
B The temperature remained constant as it gained heat.
C The temperature remained constant as it lost heat.
D The temperature decreased as it turned into water.
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Worked Solution

Step 1: Identify the process (melting). Step [2-9]: During melting, heat is gained to break the bonds between ice particles. Step [2-9]: The temperature stays at 0°C until all ice has melted.

Correct answer: The temperature remained constant as it gained heat.

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