Standard Science Primary 4 Matter

Air was pumped into an inflatable balloon. The balloon became bigger and its mass increased. This shows that air __________.

A has mass and occupies space
B is a solid
C cannot be compressed
D has a fixed shape
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Worked Solution

Step 1: The increase in size shows air occupies space. Step 2: The increase in mass shows air has mass. Step 3: Both observations confirm air is matter.

Correct answer: has mass and occupies space

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