3. 100 200 400 300 400 States of Matter MoleculesProcessesEnergy 300 200 400 200 100 500 100

4. Row 1, Col 1 Why does a bicycle tire get heavier when you pump air into it? The air has weight.

5. 1,2 A single water molecule is made of how many atoms? 3 – 2 Hydrogen and 1 oxygen

6. 1,3 The process by which a liquid turns into a solid is known as ________________. Freezing

7. 1,4 During the phase change of a liquid to a gas (evaporation), energy is ___________. added

8. 2,1 The amount of space matter takes up is called: B - volume

9. 2,2 Molecules are made of ________. Atoms

10. 2,3 The process by which a gas turns into a liquid is known as: Condensation

11. 2,4 During the phase change of a liquid to a solid (freezing), energy is ___________. taken away

12. 3,1 Water (or most other liquids) can exist in three states of matter – what are they? Ice – solid, Water – liquid, Steam - gas

13. 3,2 When molecules move at a faster rate, what phase are they in? Gas

14. 3,3 The process by which a solid turns into a liquid is known as: Melting

15. 3,4 During the phase change of a solid to a liquid (melting), energy is ___________. added

16. 4,1 When the temperature of a gas is extremely high, some of the gas _________ and is called ______. becomes electrically charged - plasma

17. 4,2 When molecules move at a slower rate, what phase are they in? liquid

18. 4,3 The process by which a liquid turns into a gas is known as: Vaporization

19. 4,4 taken away During the phase change of a gas to a liquid (condensation), energy is ___________.

20. 5,1 When you pour milk from a carton into a glass, the milk changes its___. Does the volume and mass change? Shape – volume and mass stay the same.

21. 5,2 When molecules move in one spot, what phase are they in? solid

22. 5,3 Changing from a solid to a gas is called_____. Sublimation

23. 5,4 What are the four states of matter? Solid, liquid, gas and plasma