Define:
1. phase change                              13. melting point
2. intermolecular force                     14. sublimation
3. van der Waals                             15. deposition
4. dispersion force                           16. phase diagram
5. dipole-dipole                               17. heating curve
6. hydrogen bonding                        18. specific heat
7. vapor                                          19. molar heat of fusion
8. evaporation                                 20. molar heat of vaporization
9. vapor pressure                             21. surface tension
10. volatile                                      22. cohesion
11. boiling point                              23. heat capacity
12. freezing point
 

Questions:
1. List and compare the three common states of matter.
2. Explain what happens on the molecular level during a phase diagram.
3. Explain how temperature can cause a phase change.
4. Explain how pressure can cause a phase change.
5. Explain how dispersion force can be created.
6. Why is boiling point a good method of determining the strength of dispersion forces between molecules.
7. List and compare the different intermolecular forces. Which is the strongest? Why?
8. Explain how vapor pressure is influenced by the number of molecules, temperature and intermolecular forces.
9. Why does water boil at 95°C in Denver, Colorado?
10. How do intermolecular forces influence melting points?
11. Why do you include change in temperature when dealing with specific heat but not in dealing with molar heat of fusion or vaporization?
12. Why is the heat of vaporization so much larger than the molar heat of fusion?
13. Why are raindrops round?
14. How do intermolecular forces influence surface tension?
15. Compare the density of liquid water and ice.
16. List several properties of water.

Problems:
p. 475  4,5            p. 536   1,2,3
p. 539  4,5            p. 482   10, 11, 12
Ch. Review  p. 495  5,10,11,12,13,18,23,31