1) If a box of crayons is left in a hot car on a summer afternoon, what change would you expect to see in the crayons? a) A gas becomes a liquid. b) A liquid becomes a solid. c) A solid becomes a liquid. d) A solid becomes a gas. 2) If heat is removed from water vapor, what change will occur in its physical state? a) A liquid becomes a gas. b) A solid becomes a gas. c) A gas becomes a liquid. d) A liquid becomes a solid. 3) After a storm, a group of students found puddles on the sidewalk. Later that afternoon the students observed a change in the puddles. What caused the water in the puddles to disappear? a) The shadow covered the sidewalk. b) The heat of the sun evaporated the water. c) The storms continued all day. d) The water turned into ice. 4) A glass of water was left outside on the coldest day of the year. What change could the low temperature cause in the water? a) The water will change its color. b) The water will have a salty taste. c) The water will become heavier. d) The water will turn into ice. 5) Increase in temperature a) Cool b) Heat c) Matter 6) Decrease in temperature a) Cool b) Heat c) Matter 7) Water changing from gas to liquid a) Evaporation b) Condensation c) Freezing d) Melting 8) Water changing from solid to liquid a) Evaporation b) Condensation c) Freezing d) Melting 9) To change solid water to liquid water it is necessary... a) add heat b) remove heat 10) To change liquid water to water vapor it is necessary... a) add heat b) remove heat 11) To change water vapor to liquid water it is necessary... a) add heat b) remove heat 12) To change liquid water to solid water it is necessary... a) add heat b) remove heat

Changes in the state of matter

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