Standard Science Primary 4 Matter

When a balloon is placed in a freezer, it becomes smaller. This is because the air inside the balloon __________.

A lost mass
B contracted
C escaped
D evaporated
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Worked Solution

Step 1: Air is a gas. Step [2-9]: When gases lose heat, they contract (occupy less space). Step [2-9]: The freezer removes heat from the air inside, causing it to take up less volume, making the balloon smaller.

Correct answer: contracted

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