Question 1

What is the name of the cubic unit cell shown below?

Accepted Answer

A)  Primitive Cubic 
B)  Body Centered Cubic 
C)  Face Centered Cubic 
D)  Edge Centered Cubic 
E)  None of these 
A)  Primitive Cubic 
B)  Body Centered Cubic 
C)  Face Centered Cubic 
D)  Edge Centered Cubic 
E)  None of these C

Question 2

A slush of liquid water and ice crystals is at equilibrium at 0 ° C. If a small amount of heat is removed so that more ice is formed, the system will experience:

Accepted Answer

A)  a temperature rise since crystallization of ice is an exothermic process. 
B)  a change in vapor pressure over the mixture. 
C)  a temperature lowering since more ice produces a colder system. 
D)  a change in pressure that is proportional to the heat. 
E)  no temperature change. 
A)  a temperature rise since crystallization of ice is an exothermic process. 
B)  a change in vapor pressure over the mixture. 
C)  a temperature lowering since more ice produces a colder system. 
D)  a change in pressure that is proportional to the heat. 
E)  no temperature change. E

Question 3

Consider the hydrogen halides, HX (where X = F, Cl, Br, and I). Based upon a comparison between the intermolecular forces for each compound, which would be expected to have the highest boiling point ?

Accepted Answer

A)  HF 
B)  HCl 
C)  HBr 
D)  HI 
A)  HF 
B)  HCl 
C)  HBr 
D)  HI A

Question 4

Exhibit 11-1 The heating curve below is needed for the following question(s).  
Refer to Exhibit 11-1. For the heating curve shown, which letter labels the line segment that corresponds to the heat of fusion?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 5

Exhibit 11-1 The heating curve below is needed for the following question(s).  
Refer to Exhibit 11-1. For the heating curve shown, which letter labels the line segment where only liquid is present?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 6

What intermolecular force(s) of attraction is(are) present between two molecules of CH2F2?
I. London dispersion
II. Dipole-dipole
III. Hydrogen bonding

Accepted Answer

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

Question 7

Which of the molecules shown below does not have any dipole-dipole intermolecular forces?

Accepted Answer

A)  PH3 
B)  BeH2 
C)  HBr 
D)  HCN 
E)  none of these 
A)  PH3 
B)  BeH2 
C)  HBr 
D)  HCN 
E)  none of these

Question 8

Which of the following molecules can form hydrogen bonds ?
I. CH3NH2
II. CH3OH
III. CH3F

Accepted Answer

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

Question 9

What intermolecular force(s) of attraction is(are) present between two molecules of ethanol shown below?
 
I. London dispersion
II. Dipole-dipole
III. Hydrogen bonding

Accepted Answer

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

Question 10

Arrange the following molecules in order of increasing boiling point. H2O2, HCl and O2

Accepted Answer

A)  (lowest bp) H2O2 2 (highest bp) 
B)  (lowest bp) O2 2O2 (highest bp) 
C)  (lowest bp) HCl 2O2 2 (highest bp) 
D)  (lowest bp) HCl 2 2O2 (highest bp) 
E)  (lowest bp) O2 2O2 < HCl (highest bp) 
A)  (lowest bp) H2O2 2 (highest bp) 
B)  (lowest bp) O2 2O2 (highest bp) 
C)  (lowest bp) HCl 2O2 2 (highest bp) 
D)  (lowest bp) HCl 2 2O2 (highest bp) 
E)  (lowest bp) O2 2O2 < HCl (highest bp)

Question 11

Exhibit 11-3 Consider the General Phase Diagram shown below to answer the following problem(s).  
-Refer to Exhibit 11-3. What phase transition would occur upon moving from point B to point C in the phase diagram above?

Accepted Answer

A)  Condensation 
B)  Evaporation 
C)  Freezing 
D)  Melting 
E)  Sublimation 
A)  Condensation 
B)  Evaporation 
C)  Freezing 
D)  Melting 
E)  Sublimation

Question 12

The stacking of closest packing layers for a hexagonal closest packing is best described as:

Accepted Answer

A)  ABABAB... 
B)  ABCABC... 
C)  ABBAABBA... 
D)  AABBAABB... 
E)  none of these 
A)  ABABAB... 
B)  ABCABC... 
C)  ABBAABBA... 
D)  AABBAABB... 
E)  none of these

Question 13

What type of crystal would CO2 form upon solidification?

Accepted Answer

A)  Molecular 
B)  Ionic 
C)  Covalent network 
D)  Metallic 
E)  Pyramidal 
A)  Molecular 
B)  Ionic 
C)  Covalent network 
D)  Metallic 
E)  Pyramidal

Question 14

Gold crystallizes in a face-centered cubic array of atoms. How many atoms are present per unit cell for the metal?

Accepted Answer

A)  1 
B)  2 
C)  14 
D)  4 
E)  12 
A)  1 
B)  2 
C)  14 
D)  4 
E)  12

Question 15

Which of the following molecules cannot form hydrogen bonds as a pure liquid?

Accepted Answer

A)  H - F 
B)    
C)    
D)    
E)  All of these can hydrogen bond 
A)  H - F 
B)    
C)    
D)    
E)  All of these can hydrogen bond

Question 16

The temperature at which solid is in equilibrium with its vapor is called

Accepted Answer

A)  the melting point 
B)  the freezing point 
C)  the boiling point 
D)  the sublimation point 
E)  none of these 
A)  the melting point 
B)  the freezing point 
C)  the boiling point 
D)  the sublimation point 
E)  none of these

Question 17

Cohesive forces of attraction are intermolecular attractions:

Accepted Answer

A)  between molecules of two or more different substances. 
B)  that are covalent bonds. 
C)  between molecules of the same substance. 
D)  that occur between polar molecules only. 
E)  none of these 
A)  between molecules of two or more different substances. 
B)  that are covalent bonds. 
C)  between molecules of the same substance. 
D)  that occur between polar molecules only. 
E)  none of these

Question 18

The edge of the face-centered cubic unit cell of a metal is 376 pm. What is the radius of the metal atom?

Accepted Answer

A)  376 pm 
B)  189 pm 
C)  162 pm 
D)  133 pm 
E)  none of these 
A)  376 pm 
B)  189 pm 
C)  162 pm 
D)  133 pm 
E)  none of these

Question 19

What is the transition from the gaseous phase to the solid phase?

Accepted Answer

A)  Condensing 
B)  Deposition 
C)  Evaporation 
D)  Melting 
E)  Sublimation 
A)  Condensing 
B)  Deposition 
C)  Evaporation 
D)  Melting 
E)  Sublimation

Question 20

Which phase transition listed below would represent the transition from the solid state to gaseous vapor?

Accepted Answer

A)  Condensation 
B)  Melting 
C)  Deposition 
D)  Sublimation 
E)  Evaporation 
A)  Condensation 
B)  Melting 
C)  Deposition 
D)  Sublimation 
E)  Evaporation

Exam 11: Liquids and Solids

What is the name of the cubic unit cell shown below?

A slush of liquid water and ice crystals is at equilibrium at 0 ° C. If a small amount of heat is removed so that more ice is formed, the system will experience:

Consider the hydrogen halides, HX (where X = F, Cl, Br, and I). Based upon a comparison between the intermolecular forces for each compound, which would be expected to have the highest boiling point ?

Exhibit 11-1 The heating curve below is needed for the following question(s). Refer to Exhibit 11-1. For the heating curve shown, which letter labels the line segment that corresponds to the heat of fusion?

Exhibit 11-1 The heating curve below is needed for the following question(s). Refer to Exhibit 11-1. For the heating curve shown, which letter labels the line segment where only liquid is present?

What intermolecular force(s) of attraction is(are) present between two molecules of CH2F2? I. London dispersion II. Dipole-dipole III. Hydrogen bonding

Which of the molecules shown below does not have any dipole-dipole intermolecular forces?

Which of the following molecules can form hydrogen bonds ? I. CH3NH2 II. CH3OH III. CH3F

What intermolecular force(s) of attraction is(are) present between two molecules of ethanol shown below? I. London dispersion II. Dipole-dipole III. Hydrogen bonding

Arrange the following molecules in order of increasing boiling point. H2O2, HCl and O2

Exhibit 11-3 Consider the General Phase Diagram shown below to answer the following problem(s). -Refer to Exhibit 11-3. What phase transition would occur upon moving from point B to point C in the phase diagram above?

The stacking of closest packing layers for a hexagonal closest packing is best described as:

What type of crystal would CO2 form upon solidification?

Gold crystallizes in a face-centered cubic array of atoms. How many atoms are present per unit cell for the metal?

Which of the following molecules cannot form hydrogen bonds as a pure liquid?

The temperature at which solid is in equilibrium with its vapor is called

Cohesive forces of attraction are intermolecular attractions:

The edge of the face-centered cubic unit cell of a metal is 376 pm. What is the radius of the metal atom?

What is the transition from the gaseous phase to the solid phase?

Which phase transition listed below would represent the transition from the solid state to gaseous vapor?

Introduction to Chemistry

Atoms, Molecules, and Ions

Equations, the Mole, and Chemical Formulas

Chemical Reactions in Solution

Thermochemistry

The Gaseous State

Electronic Structure

The Periodic Table: Structure and Trends

Chemical Bonds

Molecular Structure and Bonding Theories

Solutions

Chemical Kinetics

Chemical Equilibrium

Solutions of Acids and Bases

Reactions Between Acids and Bases

Chemical Thermodynamics

Electrochemistry

Transition Metals, Coordination Chemistry and Metallurgy

The Chemistry of Hydrogen, Elements in Groups 3A Through 6A, and the Noble Gases

Nuclear Chemistry

Organic Chemistry and Biochemistry

Filters

What intermolecular force(s) of attraction is(are) present between two molecules of CH₂F₂? I. London dispersion II. Dipole-dipole III. Hydrogen bonding

Which of the following molecules can form hydrogen bonds ? I. CH₃NH₂ II. CH₃OH III. CH₃F

Arrange the following molecules in order of increasing boiling point. H₂O₂, HCl and O₂

What type of crystal would CO₂ form upon solidification?