Which of the following refer to the basic categories associated with the energy of a single molecule in a gaseous phase?

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1. electronic, translation, rotation, vibration

2. nuclear, electronic, vibration3. ionic, rotation, hydrogen, Van

der Waals4. hydrogen, rotation, vibration5. dipole-dipole, covalent,

rotation, translation

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20% 20% 20%20%20%

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.

How many degrees of freedom does a monatomic molecule have?

1 2 3 4 5

20% 20% 20%20%20%

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.

What is the order of decreasing hardness according to the type of bonding and the bond strengths in ranking the hardness of solids?

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20% 20% 20%20%20%

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1. covalent, ionic, metallic2. metallic, ionic, covalent3. ionic, covalent, metallic4. metallic, covalent, ionic5. ionic, metallic, covalent

What is the difference between donor and acceptor atoms in a doped semiconductor?

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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.

An energy band in a solid consists of:

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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.

Compare vibrational and rotational levels in molecules. Which of the following statements is true?

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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.

Suppose an electric field is applied to a metal. Which of the following statements is true?

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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41 42 43 44 45 46 47 48 49 50

1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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41 42 43 44 45 46 47 48 49 50

1. 2.

3.

4. 5.

What is the Fermi temperature?

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20% 20% 20%20%20%

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.

What does the Fermi energy correspond to?

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1. 2.

3.

4. 5.

What are the categories the energy of a molecule can normally be divided into?

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1. electronic2. electronic, translational,

rotational, and vibrational3. electronic and vibrational4. vibrational, electronic and

translational5. vibrational

The energy released when an atom takes an electron is called:

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1. Nuclear energy2. Electron affinity3. Potential energy4. Dissociation energy5. Binding energy

1 2 3 4 5

20% 20% 20%20%20%

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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41 42 43 44 45 46 47 48 49 50

1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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41 42 43 44 45 46 47 48 49 50

1.2.

3.

4.5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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41 42 43 44 45 46 47 48 49 50

1.2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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41 42 43 44 45 46 47 48 49 50

1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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41 42 43 44 45 46 47 48 49 50

1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.

What form can the rotational kinetic energy of a diatomic molecule take?

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

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1. 12. 23. 34. 45. impossible to

determine

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1. 12. 23. 34. 45. impossible to

determine

1 2 3

33% 33%33%

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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

1 2 3

33% 33%33%

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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

1 2 3

33% 33%33%

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1.

2.

3.

1 2 3

33% 33%33%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1.

2.

3.

1 2 3 4 5 6

17% 17% 17%17%17%17%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3. 4.

5. 6.

1 2 3

33% 33%33%

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1. photons with no other frequencies are emitted

2. photons with lower frequencies are emitted

3. photons with higher frequencies are emitted

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?

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1. 2.

3.

4. 5.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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1. 2.

3.

4. 5.