1) A gas turns back into a liquid by the process called ______________________. a) freezing b) melting c) condensation d) evaporation 2) The molecules in a solid ____________________. a) move very quickly b) do not move at all c) go with the flow d) move very slowly 3) The 3 states of matter are called solids, liquids, and _________? a) rocks b) gases c) water d) air 4) A reversible change means that the matter can NEVER go back to the way is was before it changed. a) true b) false 5) The molecules of a gas _______________. a) move very quickly b) do not move at all c) go with the flow d) move very slowly 6) The molecules in a liquid _________________. a) are spread out far apart b) are stuck closely together c) are not real close together 7) Which state of matter does NOT have a definite shape? a) solid b) liquid c) gas 8) An irreversible change in matter can NOT be undone. a) true b) false 9) In order for a liquid to be turned into a solid ____________________________________________. a) it must be rolled around b) it must be cooled or frozen c) it must be shaken up d) it must be heated 10) Which state of matter has no definite shape and no definite space? a) solid b) liquid c) gas 11) Which state of matter does NOT take the shape of its container because it has its own shape? a) solid b) liquid c) gas 12) For a solid to turn into a liquid you must add ________________________. a) water b) ice c) heat d) gas 13) A liquid turns into a gas through the process of _________________________. a) evaporation b) freezing c) condensation d) melting 14) Which state of matter does the volume (amount) stay the same but the shape changes depending on the container its in? a) solid b) liquid c) gas 15) Water turning from an ice cube to liquid water and back to an ice cube again is called _______________________. a) a reversible change b) an irreversible change 16) Which would be an example of an irreversible change? a) melting chocolate b) freezing a popcicle c) cooling the steam from boiling water d) rusting a nail 17) If you said that a ball was round and blue, what physical properties would you be describing? a) flexibility and size b) texture and hardness c) shape and color d) temperature and color 18) Which object could be described by the physical property of being flexible? a) a rubber band b) a stapler c) a pencil d) a crayon 19) Frying an egg would be an example of _________________________________________. a) a reversible change b) an irreversible change 20) If you are buying a new mattress for your bed and you want it to be comfortable when you lay on it, which of these physical properties will be most important when picking it out at the store? a) the color of it b) the temperature of it c) the thickness of it d) the shape of it e) the smell of it

States of Matter review

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