Question 1

A metal that has a radius of 137 pm crystallizes in a body-centered cubic structure. What is the length of the edge of the unit cell in pm?

Accepted Answer

A)   137 pm
B)   274 pm
C)   316 pm
D)   387 pm
E)   none of theseF) B) and D)
G) C) and E)

Question 2

A lithium fluoride crystal is classified as:

Accepted Answer

A)   ionic
B)   molecular
C)   covalent network
D)   metallic
E)   none of theseF) B) and D)
G) A) and E)

Question 3

Which of the following molecules can form hydrogen bonds as a pure liquid?

Accepted Answer

A)   
B)   
C)   
D)   a and b
E)   all of theseF) A) and B)
G) C) and E)

Question 4

Pick the true statement below.

Accepted Answer

A)   Dipole-dipole forces dominate the intermolecular forces for HBr.
B)   The dominant intermolecular force for CH3NH2 is the dispersion force.
C)   Hydrogen bonding is the most important intermolecular force for both CH3OH and CHCl3.
D)   Hydrogen bonding is the most important intermolecular force for both HF and H2O.
E)   All four of these are false.F) A) and C)
G) A) and E)

Question 5

What is the most important intermolecular force in solid H2O?

Accepted Answer

A)   London dispersion
B)   Dipole-dipole
C)   Hydrogen bonding
D)   Ionic bonding
E)   Covalent bondingF) B) and E)
G) B) and D)

Question 6

An atom sitting in the center position in a body-centered cubic cell is shared among how many cubes?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   8F) A) and D)
G) A) and C)

Question 7

Given the three molecules listed below, which choice is best?
I. CH3OH
II. H2S
III. CH3CH3

Accepted Answer

A)   Hydrogen bonding is the dominant intermolecular force only for I.
B)   Hydrogen bonding is the dominant intermolecular force for I and II.
C)   Hydrogen bonding is the dominant intermolecular force for I, II, and III.
D)   Hydrogen bonding is not important for any of these molecules.
E)   None of these choices is correct.F) B) and D)
G) C) and E)

Question 8

What intermolecular force(s)  of interaction is(are)  possible for a molecule of NH₃shown below?

Accepted Answer

A)   London dispersion
B)   Dipole-dipole
C)   Hydrogen bonding
D)   a and b
E)   all of theseF) A) and B)
G) D) and E)

Question 9

Exhibit 11-3 Consider the General Phase Diagram shown below to answer the following problem(s) . 
-Refer to Exhibit 11-3. Which temperature-pressure point on this diagram represents conditions in which the solid phase is present in equilibrium with the liquid phase?

Accepted Answer

A)   A
B)   B
C)   C
D)   F
E)   GF) A) and C)
G) A) and B)

Question 10

Given the three statements below, pick the best answer.
I. Dipole-dipole forces are the main intermolecular force for I - Br.
II. O2 is a gas at room temperature because it is highly polarizable.
III. London forces dominate the intermolecular forces for Br2.

Accepted Answer

A)   only I is true
B)   only II is true
C)   only III is true
D)   II and III are true, I is false
E)   I and III are true, II is falseF) A) and B)
G) A) and C)

Question 11

Exhibit 11-4 Consider Aluminum metal that crystallizes in a face centered cubic cell to answer the following problem(s) . The atomic radius of an aluminum atom is 1.43 . One face of this unit cell is shown in the diagram below. 3 B)  0.677 g/cm3 C)  1.34 g/cm3 D)  2.70 g/cm3 E)  8.12 g/cm3" class="answers-bank-image d-inline" rel="preload" >
-Refer to Exhibit 11-4. What is the density of this Aluminum solid?
Molar Mass(Al)  = 26.98 g/mol

Accepted Answer

A)   0.370 g/cm3
B)   0.677 g/cm3
C)   1.34 g/cm3
D)   2.70 g/cm3
E)   8.12 g/cm3F) A) and D)
G) B) and E)

Question 12

What intermolecular force(s)  of interaction is(are)  present between two molecules of dimethyl ether, CH3OCH3?
I. London dispersion forces
II. Dipole-dipole forces
III. Hydrogen bonding

Accepted Answer

A)   I only
B)   II only
C)   III only
D)   I and II
E)   All of theseF) All of the above
G) B) and D)

Question 13

Consider liquid state molecules on the submicroscopic scale. Which statement below is true regarding the relative magnitudes of the forces of attraction and forces of disruption among liquid molecules?

Accepted Answer

A)   The forces of attraction are much greater than the kinetic energy for liquid molecules.
B)   The forces of attraction and kinetic energy are comparable for liquid molecules.
C)   The kinetic energy dominates over the forces of attraction for liquid molecules.
D)   A direct comparison between these relative forces cannot be made.E) C) and D)
F) None of the above

Question 14

Based upon an analysis of intermolecular forces of attraction among the compounds listed below, which substance would be expected to have the highest boiling point?

Accepted Answer

A)   Br2
B)   F2
C)   N2
D)   H2
E)   I2F) A) and B)
G) None of the above

Question 15

Which of the following substances have London Dispersion Forces of attraction?
I. He
II. CH4
III. H2O

Accepted Answer

A)   I only
B)   II only
C)   III only
D)   I and II
E)   All of theseF) A) and D)
G) A) and C)

Question 16

What type of crystal forces hold the units together in solid gold?

Accepted Answer

A)   molecular
B)   ionic
C)   covalent network
D)   metallic bonds
E)   none of theseF) A) and B)
G) None of the above

Question 17

In a cubic array of atoms, how many unit cells share an atom in the center of a face?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   8F) A) and B)
G) C) and D)

Question 18

On the basis of intermolecular forces of attraction, rank the following three compounds in terms of increasing boiling point . CH3CH2OH, CH3OCH3 and CH3CH2CH3

Accepted Answer

A)   (lowest bp)  CH3CH2OH 3OCH3 3CH2CH3 (highest bp) 
B)   (lowest bp)  CH3CH2OH 3CH2CH3 3OCH3 (highest bp) 
C)   (lowest bp)  CH3CH2CH3 3OCH3 3CH2OH (highest bp) 
D)   (lowest bp)  CH3CH2CH3 3CH2OH 3OCH3 (highest bp) 
E)   (lowest bp)  CH3OCH3 3CH2OH 3CH2CH3 (highest bp) F) None of the above
G) All of the above

Question 19

If the energy of intermolecular attractions are much less than the average kinetic energy of the molecules, what is the physical state of the substance?

Accepted Answer

A)   solid
B)   liquid
C)   gas
D)   plasma
E)   Its state cannot be predictedF) C) and E)
G) A) and B)

Question 20

Exhibit 11-2 The phase diagram below is needed for the following question(s) . 
Refer to Exhibit 11-2. At which of the lettered points on the phase diagram is more than one phase present?

Accepted Answer

A)   C only
B)   A, D, and F only
C)   D and F only
D)   A, C, D, and F only
E)   none of theseF) A) and B)
G) All of the above

Exam 11: Liquids and Solids

Correct Answer
verified

A metal that has a radius of 137 pm crystallizes in a body-centered cubic structure. What is the length of the edge of the unit cell in pm?

Correct Answer
verified

What type of crystal forces hold the units together in solid gold?

Correct Answer
verified

An atom sitting in the center position in a body-centered cubic cell is shared among how many cubes?

Correct Answer
verified

Pick the true statement below.

Correct Answer
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What intermolecular force(s) of interaction is(are) present between two molecules of dimethyl ether, CH₃OCH₃? I. London dispersion forces II. Dipole-dipole forces III. Hydrogen bonding

Correct Answer
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What intermolecular force(s) of interaction is(are) possible for a molecule of NH₃shown below?

Correct Answer
verified

Which of the following molecules can form hydrogen bonds as a pure liquid?

Correct Answer
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On the basis of intermolecular forces of attraction, rank the following three compounds in terms of increasing boiling point . CH₃CH₂OH, CH₃OCH₃ and CH₃CH₂CH₃

Correct Answer
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Exhibit 11-2 The phase diagram below is needed for the following question(s) . Refer to Exhibit 11-2. At which of the lettered points on the phase diagram is more than one phase present?

Correct Answer
verified

Consider liquid state molecules on the submicroscopic scale. Which statement below is true regarding the relative magnitudes of the forces of attraction and forces of disruption among liquid molecules?

Correct Answer
verified

Exhibit 11-3 Consider the General Phase Diagram shown below to answer the following problem(s) . -Refer to Exhibit 11-3. Which temperature-pressure point on this diagram represents conditions in which the solid phase is present in equilibrium with the liquid phase?

Correct Answer
verified

Based upon an analysis of intermolecular forces of attraction among the compounds listed below, which substance would be expected to have the highest boiling point?

Correct Answer
verified

Given the three molecules listed below, which choice is best? I. CH₃OH II. H₂S III. CH₃CH₃

Correct Answer
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What is the most important intermolecular force in solid H₂O?

Correct Answer
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Which of the following substances have London Dispersion Forces of attraction? I. He II. CH₄ III. H₂O

Correct Answer
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A lithium fluoride crystal is classified as:

Correct Answer
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In a cubic array of atoms, how many unit cells share an atom in the center of a face?

Correct Answer
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Given the three statements below, pick the best answer. I. Dipole-dipole forces are the main intermolecular force for I - Br. II. O₂ is a gas at room temperature because it is highly polarizable. III. London forces dominate the intermolecular forces for Br₂.

Correct Answer
verified

If the energy of intermolecular attractions are much less than the average kinetic energy of the molecules, what is the physical state of the substance?

Correct Answer
verified

Exam 11: Liquids and Solids

Correct AnswerverifiedShow Answer

A metal that has a radius of 137 pm crystallizes in a body-centered cubic structure. What is the length of the edge of the unit cell in pm?

Correct AnswerverifiedShow Answer

What type of crystal forces hold the units together in solid gold?

Correct AnswerverifiedShow Answer

An atom sitting in the center position in a body-centered cubic cell is shared among how many cubes?

Correct AnswerverifiedShow Answer

Pick the true statement below.

Correct AnswerverifiedShow Answer

What intermolecular force(s) of interaction is(are) present between two molecules of dimethyl ether, CH3OCH3? I. London dispersion forces II. Dipole-dipole forces III. Hydrogen bonding

Correct AnswerverifiedShow Answer

What intermolecular force(s) of interaction is(are) possible for a molecule of NH₃shown below?

Correct AnswerverifiedShow Answer

Which of the following molecules can form hydrogen bonds as a pure liquid?

Correct AnswerverifiedShow Answer

On the basis of intermolecular forces of attraction, rank the following three compounds in terms of increasing boiling point . CH3CH2OH, CH3OCH3 and CH3CH2CH3

Correct AnswerverifiedShow Answer

Exhibit 11-2 The phase diagram below is needed for the following question(s) . Refer to Exhibit 11-2. At which of the lettered points on the phase diagram is more than one phase present?

Correct AnswerverifiedShow Answer

Consider liquid state molecules on the submicroscopic scale. Which statement below is true regarding the relative magnitudes of the forces of attraction and forces of disruption among liquid molecules?

Correct AnswerverifiedShow Answer

Exhibit 11-3 Consider the General Phase Diagram shown below to answer the following problem(s) . -Refer to Exhibit 11-3. Which temperature-pressure point on this diagram represents conditions in which the solid phase is present in equilibrium with the liquid phase?

Correct AnswerverifiedShow Answer

Based upon an analysis of intermolecular forces of attraction among the compounds listed below, which substance would be expected to have the highest boiling point?

Correct AnswerverifiedShow Answer

Given the three molecules listed below, which choice is best? I. CH3OH II. H2S III. CH3CH3

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What is the most important intermolecular force in solid H2O?

Correct AnswerverifiedShow Answer

Which of the following substances have London Dispersion Forces of attraction? I. He II. CH4 III. H2O

Correct AnswerverifiedShow Answer

A lithium fluoride crystal is classified as:

Correct AnswerverifiedShow Answer

In a cubic array of atoms, how many unit cells share an atom in the center of a face?

Correct AnswerverifiedShow Answer

Given the three statements below, pick the best answer. I. Dipole-dipole forces are the main intermolecular force for I - Br. II. O2 is a gas at room temperature because it is highly polarizable. III. London forces dominate the intermolecular forces for Br2.

Correct AnswerverifiedShow Answer

If the energy of intermolecular attractions are much less than the average kinetic energy of the molecules, what is the physical state of the substance?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

What intermolecular force(s) of interaction is(are) present between two molecules of dimethyl ether, CH₃OCH₃? I. London dispersion forces II. Dipole-dipole forces III. Hydrogen bonding

Correct Answer
verified

Correct Answer
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Correct Answer
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On the basis of intermolecular forces of attraction, rank the following three compounds in terms of increasing boiling point . CH₃CH₂OH, CH₃OCH₃ and CH₃CH₂CH₃

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Given the three molecules listed below, which choice is best? I. CH₃OH II. H₂S III. CH₃CH₃

Correct Answer
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What is the most important intermolecular force in solid H₂O?

Correct Answer
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Which of the following substances have London Dispersion Forces of attraction? I. He II. CH₄ III. H₂O

Correct Answer
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Correct Answer
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Correct Answer
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Given the three statements below, pick the best answer. I. Dipole-dipole forces are the main intermolecular force for I - Br. II. O₂ is a gas at room temperature because it is highly polarizable. III. London forces dominate the intermolecular forces for Br₂.

Correct Answer
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Correct Answer
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