1) What are the three main states of matter? a) solid, liquid and gas b) fast, slow and medium c) hot, cold and warm 2) When water freezes, what state is it in? a) solid b) gas c) liquid 3) What happens to a liquid when it is heated? a) it freezes b) it becomes a solid c) it turns into a gas 4) Which state of matter has a definite shape and volume? a) solid b) liquid c) gas 5) What is the process called when a gas turns into a liquid? a) melting b) condensation c) evaporation 6) What is the term for a substance that can exist in all three states of matter at different temperatures? a) element b) compound c) mixture d) all of the above 7) Which state of matter takes the shape of its container but has a definite volume? a) solid b) liquid c) gas 8) What is steam? a) liquid water b) solid water c) gaseous water 9) Which of the following is an example of a gas in the Earth’s atmosphere? a) oxygen b) water c) iron 10) What is the state of matter of a puddle of water? a) solid b) liquid c) gas 11) What is the process called when a liquid turns into a gas? a) melting b) evaporation c) condensation 12) Which state of matter has particles that are closely packed together and vibrate in fixed positions? a) solid b) liquid c) gas 13) What process occurs when water vapour hits a cold surface? a) condensation b) sublimation c) evaporation 14) What happens to candle wax when it melts? a) it turns into a solid b) it becomes a liquid c) it transforms into a gas 15) Which state of matter has neither a definite shape nor a definite volume? a) solid b) liquid c) gas

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