What is matter? a) Anything that takes up space and has mass. b) Only solids and liquids. c) Only living things. d) Only things you can see. Answer: a

Which of these is NOT a state of matter? a) Solid b) Liquid c) Gas d) Energy Answer: d

What is the difference between a solid, liquid, and gas? a) Solids have a definite shape and volume, liquids have a definite volume but not shape, and gases have neither. b) Solids have no definite shape or volume, liquids have a definite volume but not shape, and gases have neither. c) Solids have a definite shape and volume, liquids have neither, and gases have a definite volume but not shape. d) Solids have neither, liquids have a definite volume but not shape, and gases have a definite shape and volume. Answer: a

What happens to the particles in a substance when it changes state? a) They disappear. b) They change size. c) They change their arrangement and energy. d) They are created or destroyed. Answer: c

What is the process called when a solid turns directly into a gas? a) Melting b) Boiling c) Sublimation d) Condensation Answer: c

What is the process called when a gas turns directly into a solid? a) Melting b) Freezing c) Deposition d) Evaporation Answer: c

What is density? a) How much space something takes up. b) How much matter is packed into a certain volume. c) How heavy something is. d) How much something costs. Answer: b

Which state of matter is generally the least dense? a) Solid b) Liquid c) Gas d) Plasma Answer: c

What is the particle theory of matter? a) Matter is made up of tiny particles that are always moving. b) Matter is made up of large, stationary particles. c) Matter is made up of only atoms. d) Matter is made up of only molecules. Answer: a

What is a mixture? a) A substance made of only one type of atom. b) A substance made of only one type of molecule. c) A combination of two or more substances that are not chemically bonded. d) A chemically bonded substance. Answer: c