Standard Science Primary 5 Cycles

Jun Jie removed a can of cold drink from the refrigerator and left it on the table. After 10 minutes, he noticed water droplets forming on the outside of the can. Where did the water droplets come from?

A The ice inside the can melted.
B Water vapour in the surrounding air lost heat to the cold can and condensed.
C The cold water inside the can seeped out.
D Water vapour from the can gained heat and condensed.
Show Worked Solution

Worked Solution

Step 1: The can is cold, meaning its surface temperature is lower than the surrounding air. Step 2: The surrounding air contains warm water vapour. Step 3: When the warm water vapour touches the cooler surface of the can, it loses heat and condenses into liquid water droplets.

Correct answer: Water vapour in the surrounding air lost heat to the cold can and condensed.

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