1) ....................... is process of changes of matter from solid into liquid. a) Melting b) Boiling c) Freezing d) Heating 2) Ice stats to melt at ..................degree celcius a) 100 b) 50 c) 0 d) 30 3) We use a ...................................to measure the melting and freezing points of substances. a) Anemometer b) Thermometer c) Speedometer d) Hydrometer 4) Melting is..... a) A process where a gas changes into a solid. b) A process where a liquid changes into solid. c) A process where a solid changes into gas. d) A process where a solid changes into a liquid. 5) Choose the picture that show MELTING a) b) c) d) 6) Choose the picture that shows freezing a) b) c) d) 7) What causes ice to melt? a) heat b) cold c) all of the above d) None of the above

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