Question 1

CsCl crystallizes in a unit cell that contains a Cs+ ion at the center of a cube and a Cl- ion at each corner. The unit cell of CsCl is .

Accepted Answer

A)   amorphous
B)   primitive cubic
C)   close packed
D)   body- centered cubic
E)   face- centered cubicF) B) and C)
G) A) and C) B

Question 2

Hydrogen bonding is a special case of _ .

Accepted Answer

A)   ion- dipole attraction
B)   London- dispersion forces
C)   dipole- dipole attractions
D)   none of the above
E)   ion- ion interactionsF) B) and E)
G) B) and D)

Question 3

Which one of the following substances will not have hydrogen bonding as one of its intermolecular forces?

Accepted Answer

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

Question 4

The predominant intermolecular force in (CH3) 2NH is .

Accepted Answer

A)   hydrogen bonding
B)   ion- dipole forces
C)   ionic bonding
D)   London dispersion forces
E)   dipole- dipole forcesF) B) and C)
G) A) and D) A

Question 5

Which of the following is not a type of solid? ionic
Molecular supercritical metallic
Covalent- network

Accepted Answer

A)   molecular
B)   metallic
C)   supercritical
D)   covalent- network
E)   ionicF) A) and B)
G) C) and D)

Question 6

The phase changes B -C and D -E are not associated with temperature increases because the heat energy is used up to .

Accepted Answer

A)   rearrange atoms within molecules
B)   break intramolecular bonds
C)   increase distances between molecules
D)   increase the density of the sample
E)   increase the velocity of moleculesF) B) and D)
G) C) and D)

Question 7

Metallic solids do not exhibit .

Accepted Answer

A)   extreme brittleness
B)   variable hardness
C)   excellent thermal conductivity
D)   variable melting point
E)   excellent electrical conductivityF) C) and D)
G) B) and C)

Question 8

The substance with the largest heat of vaporization is _ .
I2
Br2 Cl2 F2 O2

Accepted Answer

A)   O2 
B)   Cl2 
C)   I2 
D)   F2 
E)   Br2F) A) and B)
G) All of the above

Question 9

Based on the figure above, the boiling point of ethyl alcohol under an external pressure of 0.0724 atm is °C.

Accepted Answer

A)   60
B)   80
C)   40
D)   70
E)   20F) C) and D)
G) A) and B)

Question 10

Chromium crystallizes in a body- centered cubic unit cell. There are chromium atoms per unit cell.

Accepted Answer

The answer of Chromium crystallizes in a body- centered cubic...

Question 11

Large intermolecular forces in a substance are manifested by .

Accepted Answer

A)   high critical temperatures and pressures
B)   high heats of fusion and vaporization
C)   high boiling point
D)   low vapor pressure
E)   all of the aboveF) A) and C)
G) None of the above

Question 12

Which of the following molecules has hydrogen bonding as its only intermolecular force?

Accepted Answer

A)   HF
B)   H2O
C)   C5H11OH
D)   C6H13NH2
E)   None, all of the above exhibit dispersion forces.F) A) and B)
G) None of the above

Question 13

The property responsible for the "beading up" of water is .

Accepted Answer

A)   surface tension
B)   hydrogen bonding
C)   vapor pressure
D)   density
E)   viscosityF) D) and E)
G) None of the above

Question 14

Of the following, should have the highest critical temperature.

Accepted Answer

A)   CCl4 
B)   CF4 
C)   H2 
D)   CBr4 
E)   CH4F) C) and D)
G) A) and E)

Question 15

The unit cell with all sides the same length and all angles equal to 90° that has lattice points only at the corners is called .

Accepted Answer

A)   primitive cubic
B)   spherical cubic
C)   face- centered cubic
D)   monoclinic
E)   body- centered cubicF) B) and E)
G) C) and D) A

Question 16

In which of the following molecules is hydrogen bonding likely to be the most significant component of the total intermolecular forces?

Accepted Answer

A)   C5H11OH
B)   CO2
C)   CH3OH
D)   CH4
E)   C6H13NH2F) A) and B)
G) A) and C)

Question 17

A volatile liquid is one that .

Accepted Answer

A)   is highly viscous
B)   readily evaporates
C)   is highly flammable
D)   is highly cohesive
E)   is highly hydrogen- bondedF) A) and B)
G) A) and C)

Question 18

Elemental iodine (I2)  is a solid at room temperature. What is the major attractive force that exists among different I2 molecules in the solid?

Accepted Answer

A)   dipole- dipole attractions
B)   covalent- ionic interactions
C)   London dispersion forces
D)   dipole- dipole rejections
E)   ionic- dipole interactionsF) A) and C)
G) A) and D)

Question 19

Of the following substances, only has London dispersion forces as the only intermolecular force. 3OH D)  H2S E)  NH3" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   Kr
B)   HCl
C)   CH3OH
D)   H2S
E)   NH3F) B) and E)
G) B) and D)

Question 20

The phase diagram of a substance is given above. The region that corresponds to the solid phase is

Accepted Answer

A)   w
B)   x
C)   y
D)   z
E)   x and yF) A) and B)
G) A) and C)

Exam 11: Intermolecular Forces, Liquids, and Solids

CsCl crystallizes in a unit cell that contains a Cs+ ion at the center of a cube and a Cl- ion at each corner. The unit cell of CsCl is .

Correct AnswerverifiedB

Hydrogen bonding is a special case of _ .

Correct AnswerverifiedShow Answer

Which one of the following substances will not have hydrogen bonding as one of its intermolecular forces?

Correct AnswerverifiedShow Answer

The predominant intermolecular force in (CH3) 2NH is .

Correct AnswerverifiedA

Which of the following is not a type of solid? ionic Molecular supercritical metallic Covalent- network

Correct AnswerverifiedShow Answer

The phase changes B -C and D -E are not associated with temperature increases because the heat energy is used up to .

Correct AnswerverifiedShow Answer

Metallic solids do not exhibit .

Correct AnswerverifiedShow Answer

The substance with the largest heat of vaporization is _ . I2 Br2 Cl2 F2 O2

Correct AnswerverifiedShow Answer

Based on the figure above, the boiling point of ethyl alcohol under an external pressure of 0.0724 atm is °C.

Correct AnswerverifiedShow Answer

Chromium crystallizes in a body- centered cubic unit cell. There are chromium atoms per unit cell.

Correct AnswerverifiedShow Answer

Large intermolecular forces in a substance are manifested by .

Correct AnswerverifiedShow Answer

Which of the following molecules has hydrogen bonding as its only intermolecular force?

Correct AnswerverifiedShow Answer

The property responsible for the "beading up" of water is .

Correct AnswerverifiedShow Answer

Of the following, should have the highest critical temperature.

Correct AnswerverifiedShow Answer

The unit cell with all sides the same length and all angles equal to 90° that has lattice points only at the corners is called .

Correct AnswerverifiedA

In which of the following molecules is hydrogen bonding likely to be the most significant component of the total intermolecular forces?

Correct AnswerverifiedShow Answer

A volatile liquid is one that .

Correct AnswerverifiedShow Answer

Elemental iodine (I2) is a solid at room temperature. What is the major attractive force that exists among different I2 molecules in the solid?

Correct AnswerverifiedShow Answer

Of the following substances, only has London dispersion forces as the only intermolecular force.

Correct AnswerverifiedShow Answer

The phase diagram of a substance is given above. The region that corresponds to the solid phase is

Correct AnswerverifiedShow Answer

CsCl crystallizes in a unit cell that contains a Cs⁺ion at the center of a cube and a Cl^-ion at each corner. The unit cell of CsCl is .

Correct Answer
verified
B

Correct Answer
verified

Correct Answer
verified

The predominant intermolecular force in (CH₃) ₂NH is .

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The substance with the largest heat of vaporization is _ . I₂ Br₂Cl₂F₂O₂

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

Elemental iodine (I₂) is a solid at room temperature. What is the major attractive force that exists among different I₂molecules in the solid?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified