Standard Science Primary 4 Matter

When an empty bottle is pushed vertically into a basin of water, very little water enters the bottle. Why?

A Gases have no definite mass.
B The bottle is waterproof.
C Water has a definite volume.
D Air in the bottle occupies space.
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Worked Solution

Step 1: The "empty" bottle is actually filled with air. Step [2-9]: Air is matter and occupies space. Step [2-9]: Water cannot enter because the space is already occupied by air.

Correct answer: Air in the bottle occupies space.

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