1) Which of the following statements explains why you can't pour a solid? a) The particles touch other particles b) The particles are in a pattern c) The particles don't move from place to place d) The particles vibrate 2) Bromine has a melting point of -7 degrees and a boiling point of 59 degrees. What state will it be in at 65 degrees a) gas b) liquid c) solid 3) Krypton has a melting point of -157 and a boiling point of -152. What state will it be at 20 degrees a) solid b) gas c) liquid 4) "Particles leave from the surface of the liquid." Which change of state does this sentence relate to? a) melting b) boiling c) condensing d) freezing e) evaporating 5) "Particles leave from all parts of the liquid". Which change of state does this sentence relate to? a) melting b) boiling c) condensing d) freezing e) evaporating 6) What is sublimation? a) Solid to liquid b) Gas to solid c) Solid to gas d) Gas to liquid e) Liquid to solid 7) Which of the following are mixtures? a) chocolate b) milk c) gold d) air e) water f) oxygen 8) What does boiling point mean? a) The point where bubbles form at the surface of a liquid b) The point where the whole of the liquid has bubbles throughout c) The point where a solid turns into a liquid

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