Standard Science Primary 5 Cycles

When Ravi breathed onto a cold mirror, it became misty. This is because water vapour from his breath __________.

A turned into steam
B condensed into tiny water droplets
C evaporated into the air
D melted the surface of the mirror
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Worked Solution

Step 1: Breath contains warm water vapour. Step 2: The mirror is a cold surface. Step 3: Warm water vapour loses heat to the cold mirror and turns into liquid water droplets (condensation).

Correct answer: condensed into tiny water droplets

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