Standard Science Primary 4 Energy

Which of the following processes involves a GAIN of heat?

A Steam condensing into water
B Water vapour turning into frost
C Water freezing into ice
D Ice melting into water
Show Worked Solution

Worked Solution

Step 1: Analyze the state changes. Melting and Boiling require heat gain. Step 2: Freezing and Condensation require heat loss. Step 3: Ice melting into water is the correct process.

Correct answer: Ice melting into water

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