Standard Science Primary 4 Matter

Which of the following remains the same when a fixed amount of gas is transferred from a 1-litre bottle to a 2-litre bottle?

A Mass
B Volume
C Shape
D Compressibility
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Worked Solution

Step 1: Recall properties of gas: No definite shape, no definite volume. Step 2: The amount of matter (mass) does not change unless gas is added or removed. Step 3: Mass remains constant.

Correct answer: Mass

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