Standard Science Primary 4 Matter

Siti trapped some air in a syringe and covered the nozzle with her finger. When she pushed the plunger, the volume of air decreased. What property of air does this show?

A Air has mass.
B Air can be compressed.
C Air has a definite volume.
D Air takes up space.
Show Worked Solution

Worked Solution

Step 1: Identify the action (pushing the plunger) and the observation (volume decreased). Step [2-9]: Understand that solids and liquids have definite volumes and cannot be compressed significantly. Step [2-9]: Since the volume of the trapped air could be reduced, it shows air is compressible.

Correct answer: Air can be compressed.

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