1. Which of the following refer to the basic categories associated with the energy of a single molecule in a gaseous phase? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.electronic, translation, rotation, vibration 2.nuclear, electronic, vibration 3.ionic, rotation, hydrogen, Van der Waals 4.hydrogen, rotation, vibration 5.dipole-dipole, covalent, rotation, translation

2. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

3. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

4. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

5. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

6. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

7. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

8. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

9. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

10. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

11. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

12. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

13. How many degrees of freedom does a monatomic molecule have? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

14. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

15. What is the order of decreasing hardness according to the type of bonding and the bond strengths in ranking the hardness of solids? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.covalent, ionic, metallic 2.metallic, ionic, covalent 3.ionic, covalent, metallic 4.metallic, covalent, ionic 5.ionic, metallic, covalent

16. What is the difference between donor and acceptor atoms in a doped semiconductor? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.Donor energy levels cannot exist unless acceptor energy levels are present. 2.The donor energy level lies near the valence band and the acceptor energy level lies near the conduction band. 3.The donor energy level lies near the conduction band and the acceptor energy level lies near the valence band. 4.The acceptor energy level lies halfway between the conduction band and the donor energy level. 5.The donor energy level lies halfway between the valence band and the acceptor level.

17. An energy band in a solid consists of: 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.A large number of electrons so closely spaced that they may be regarded as a continuous band of electric charge. 2.An infinite number of wave functions, with each wave function corresponding to a point in a box. 3.An infinite number of electrons, with each electron corresponding to a point in a box. 4.A large number of energy levels so closely spaced that they may be regarded as a continuous band. 5.An infinite number of levels, with each level corresponding to a point in a box.

18. Compare vibrational and rotational levels in molecules. Which of the following statements is true? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.The energy separation between adjacent energy levels is the same in rotational and vibrational levels. 2.The energy separation between adjacent energy levels is greater in rotational than in vibrational levels. 3.The energy separation between adjacent energy levels is inversely proportional with one rotational level for each vibrational level. 4.The energy separation between adjacent energy levels is greater in vibrational than in rotational levels. 5.The energy separation between adjacent energy levels is directly proportional with one rotational level for each vibrational level.

19. Suppose an electric field is applied to a metal. Which of the following statements is true? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1. 2. 3. 4. 5.

20. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

21. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

22. What is the Fermi temperature? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1. 2. 3. 4.5.

23. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

24. What does the Fermi energy correspond to? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

25. What are the categories the energy of a molecule can normally be divided into? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.electronic 2.electronic, translational, rotational, and vibrational 3.electronic and vibrational 4.vibrational, electronic and translational 5.vibrational

26. The energy released when an atom takes an electron is called: 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.Nuclear energy 2.Electron affinity 3.Potential energy 4.Dissociation energy 5.Binding energy

27. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

28. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1. 2. 3. 4. 5.

29. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1. 2. 3. 4. 5.

30. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1. 2. 3. 4. 5.

31. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

32. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

33. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

34. What form can the rotational kinetic energy of a diatomic molecule take? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

35. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

36. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.1 2.2 3.3 4.4 5.impossible to determine

37. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.1 2.2 3.3 4.4 5.impossible to determine

38. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.there is no pair of energy levels that are separated by an energy corresponding to this frequency 2.the transition between energy levels that are separated by an energy corresponding to this frequency is not allowed 3.molecules cannot rotate and vibrate simultaneously

39. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.is the same as the one in the figure 2.is farther from the gap than in the figure 3.is closer to the gap than in the figure

40. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1. 2. 3.

41. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1. 2. 3.

42. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3.4. 5.6.

43. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.photons with no other frequencies are emitted 2.photons with lower frequencies are emitted 3.photons with higher frequencies are emitted

44. A van der Waals dispersion force between helium atoms produces a very shallow potential well, with a depth on the order of 1 meV. At about what temperature would you expect helium to condense? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.

45. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2. 3. 4.5.