Standard Science Primary 4 Matter

Siti compressed a sponge in her hand. She noticed that the sponge became smaller. Which of the following remained the same?

A The mass of the sponge.
B The volume of the sponge.
C The space occupied by the sponge.
D The shape of the sponge.
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Worked Solution

Step 1: Compression removes air from the pores of the sponge, reducing its volume. Step 2: However, the actual amount of matter (the sponge material) does not change. Step 3: Mass is the amount of matter in an object and remains constant here.

Correct answer: The mass of the sponge.

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