Advanced Science Primary 3 Diversity

A syringe is filled with 30 ml of air. The nozzle is sealed, and the plunger is pushed inwards as shown in Setup B. What does this experiment prove about air?

A Air can be compressed.
B Air occupies space.
C Air has no definite shape.
D Air has mass.
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Worked Solution

Step 1: Compare Setup A (30ml) and Setup B (15ml). Step 2: The volume of air decreased when pressure was applied. Step 3: This ability to decrease in volume proves air is compressible.

Correct answer: Air can be compressed.

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