Standard Science Primary 4 Matter

Stan pumped more air into a basketball. He noticed that the mass of the basketball increased. This proves that __________.

A air has a definite shape
B air has mass
C air can be compressed
D air occupies space
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Worked Solution

Step 1: Matter is anything that has mass and occupies space. Step 2: Adding more air increased the total weight/mass on the scale. Step 3: This directly demonstrates that air has mass.

Correct answer: air has mass

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