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4 questions · About 4 min · Basic Science · Junior Secondary 1

Matter around us

Classify everyday materials and explain simple changes of state.

Topic: States of matter

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1Which example is a gas at ordinary room temperature?
2When ice melts, what does it become?
3A sealed balloon expands when more air is blown in. What does this show?
4What is the name for liquid water becoming water vapour from its surface?