Siti trapped 50 cm³ of air in a syringe and sealed the tip. She then pushed the plunger in. Which of the following shows the correct change in the volume and shape of the trapped air?
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Worked Solution
Step 1: Air is a gas.
Step 2: Gases have no definite volume (can be compressed) and no definite shape.
Step 3: Pushing the plunger reduces the space, so volume decreases and shape follows the container.
Correct answer: Volume: Decreases; Shape: Changes
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