Standard Science Primary 5 Cycles

Stan took a can of cold drink out of the refrigerator. After a few minutes, he noticed water droplets on the outside of the can. Which of the following explains this?

A Cold water seeped out through the metal can.
B Warm water vapour from the air lost heat and condensed on the cold can.
C Ice inside the can melted into water.
D The cold can absorbed water vapour from the air.
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Worked Solution

Step 1: The air around the can contains warm, invisible water vapour. Step 2: The surface of the can is cold. Step 3: When the warm water vapour touches the cold surface, it loses heat and condenses into liquid water droplets.

Correct answer: Warm water vapour from the air lost heat and condensed on the cold can.

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