Question 1

In which of the following pairs of molecules would the first listed member of the pair have a higher boiling point than the second listed member of the pair?

Accepted Answer

A)  HF and HBr 
B)  F2 and Cl2 
C)  O2 and NO 
D)  more than one correct response 
E)  no correct response 
A)  HF and HBr 
B)  F2 and Cl2 
C)  O2 and NO 
D)  more than one correct response 
E)  no correct response A

Question 2

Considering change of state descriptions, select the name of the change of state that involves both the liquid and solid state.

Accepted Answer

A)  sublimation 
B)  condensation 
C)  deposition 
D)  freezing 
A)  sublimation 
B)  condensation 
C)  deposition 
D)  freezing D

Question 3

Which of the following statements concerning evaporation is incorrect?

Accepted Answer

A)  Molecules with energies considerably above average are those that escape from the liquid. 
B)  Increasing the surface area of the liquid decreases the rate of evaporation. 
C)  Increasing the temperature of the liquid increases the rate of evaporation. 
D)  Evaporation causes the liquid temperature to decrease. 
A)  Molecules with energies considerably above average are those that escape from the liquid. 
B)  Increasing the surface area of the liquid decreases the rate of evaporation. 
C)  Increasing the temperature of the liquid increases the rate of evaporation. 
D)  Evaporation causes the liquid temperature to decrease. B

Question 4

Which of the following is a correct equation for the combined gas law?

Accepted Answer

A)    
B)    
C)    
D)  more than one correct response 
E)  no correct response 
A)    
B)    
C)    
D)  more than one correct response 
E)  no correct response

Question 5

Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices: (1) The ideal gas law involves the variables P, V, T, and R, and the constant n.
(2) Boiling is a special form of evaporation that occurs when atmospheric pressure exceeds the vapor pressure of the hot liquid.
(3) The two requirements for hydrogen bond formation are molecular polarity and the presence of covalently-bonded hydrogen atoms.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Question 6

Considering change of state descriptions, select the name of the change of state for that involves both the liquid and gaseous state.

Accepted Answer

A)  sublimation 
B)  condensation 
C)  deposition 
D)  freezing 
A)  sublimation 
B)  condensation 
C)  deposition 
D)  freezing

Question 7

The correct form of the equation for the ideal gas law is

Accepted Answer

A)  PV = nRT 
B)  PT = nRV 
C)  P/V = nRT 
D)  PV = n/RT 
A)  PV = nRT 
B)  PT = nRV 
C)  P/V = nRT 
D)  PV = n/RT

Question 8

Which of the following pressure relationships is correct?

Accepted Answer

A)  760 torr = 760 mm Hg 
B)  1 atm = 15.8 psi 
C)  650 torr = 1 atm 
D)  more than one correct response 
E)  no correct response 
A)  760 torr = 760 mm Hg 
B)  1 atm = 15.8 psi 
C)  650 torr = 1 atm 
D)  more than one correct response 
E)  no correct response

Question 9

Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices: (1) For molecules of similar molecular mass, nonpolar molecules have higher vapor pressures than polar molecules.
(2) Temperature values must be expressed on the Kelvin scale when using all gas laws except the ideal gas law.
(3) The average kinetic energy of a system of molecules decreases as temperature increases.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Question 10

Which of the following is not a factor in determining the magnitude of the vapor pressure of a liquid?

Accepted Answer

A)  the temperature of the liquid 
B)  the strength of the attractive forces between molecules of the liquid 
C)  the size of the container for the liquid 
D)  the type of forces between molecules within the liquid 
A)  the temperature of the liquid 
B)  the strength of the attractive forces between molecules of the liquid 
C)  the size of the container for the liquid 
D)  the type of forces between molecules within the liquid

Question 11

Which of the following statements is not a part of kinetic molecular theory?

Accepted Answer

A)  Matter is composed of particles that are in constant motion. 
B)  Particle velocity increases as the temperature increases. 
C)  Particles in a system cannot transfer energy to each other. 
D)  Particle interactions involve electrostatic attractions and repulsions. 
A)  Matter is composed of particles that are in constant motion. 
B)  Particle velocity increases as the temperature increases. 
C)  Particles in a system cannot transfer energy to each other. 
D)  Particle interactions involve electrostatic attractions and repulsions.

Question 12

For each of the physical state characterizations, select from the response list the physical state or states to which the characterizations apply: indefinite shape.

Accepted Answer

A)  liquid state only 
B)  solid state only 
C)  both liquid and solid states 
D)  both gaseous and liquid states 
A)  liquid state only 
B)  solid state only 
C)  both liquid and solid states 
D)  both gaseous and liquid states

Question 13

Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices: (1) Macroscopic properties of the liquid state include a definite shape and a definite volume.
(2) A condition of physical equilibrium is associated with the measurement of vapor pressure.
(3) Boyle's law involves a direct proportionality relationship between pressure and volume.

Accepted Answer

A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true. 
A)  All three statements are true. 
B)  Two of the three statements are true. 
C)  Only one of the statements is true. 
D)  None of the statements is true.

Question 14

In which of the following groupings are the three terms closely related?

Accepted Answer

A)  kinetic energy, energy of motion, cohesive forces 
B)  potential energy, energy of attraction, disruptive forces 
C)  kinetic energy, electrostatic interactions, disruptive forces 
D)  potential energy, electrostatic interactions, cohesive forces 
A)  kinetic energy, energy of motion, cohesive forces 
B)  potential energy, energy of attraction, disruptive forces 
C)  kinetic energy, electrostatic interactions, disruptive forces 
D)  potential energy, electrostatic interactions, cohesive forces

Question 15

The boiling point of a liquid is

Accepted Answer

A)  the temperature at which the rate of evaporation and sublimation are equal 
B)  always 200F1F1F1S1F1F1F10C or greater 
C)  the temperature at which the pressure over the liquid equals the vapor pressure of the liquid 
D)  the temperature at which liquid-vapor equilibrium is reached 
A)  the temperature at which the rate of evaporation and sublimation are equal 
B)  always 200F1F1F1S1F1F1F10C or greater 
C)  the temperature at which the pressure over the liquid equals the vapor pressure of the liquid 
D)  the temperature at which liquid-vapor equilibrium is reached

Question 16

Boyle's law involves which of the following?

Accepted Answer

A)  a direct proportion 
B)  a constant volume 
C)  a constant pressure 
D)  a constant temperature 
A)  a direct proportion 
B)  a constant volume 
C)  a constant pressure 
D)  a constant temperature

Question 17

A volatile liquid would

Accepted Answer

A)  have weak attractive forces between molecules 
B)  evaporate "slowly" at room temperature 
C)  have a low vapor pressure at room temperature 
D)  more than one correct response 
E)  no correct response 
A)  have weak attractive forces between molecules 
B)  evaporate "slowly" at room temperature 
C)  have a low vapor pressure at room temperature 
D)  more than one correct response 
E)  no correct response

Question 18

For each of the physical state characterizations, select from the response list the physical state or states to which the characterizations apply: potential energy dominates over kinetic energy.

Accepted Answer

A)  liquid state only 
B)  solid state only 
C)  both liquid and solid states 
D)  both gaseous and liquid states 
A)  liquid state only 
B)  solid state only 
C)  both liquid and solid states 
D)  both gaseous and liquid states

Question 19

The partial pressure of helium in a gaseous mixture of helium and nitrogen trifluoride is

Accepted Answer

A)  the pressure that the helium would exert in the absence of the nitrogen trifluoride 
B)  the percentage of the total pressure of the mixture that is contributed by helium 
C)  equal to the total pressure divided by helium's molar mass 
D)  equal to the total pressure divided by the number of helium atoms present 
A)  the pressure that the helium would exert in the absence of the nitrogen trifluoride 
B)  the percentage of the total pressure of the mixture that is contributed by helium 
C)  equal to the total pressure divided by helium's molar mass 
D)  equal to the total pressure divided by the number of helium atoms present

Question 20

In which of the following liquids would London forces be the predominant intermolecular force?

Accepted Answer

A)  HCN 
B)  N2 
C)  H2S 
D)  IF 
A)  HCN 
B)  N2 
C)  H2S 
D)  IF

Exam 7: Gases, Liquids, and Solids

In which of the following pairs of molecules would the first listed member of the pair have a higher boiling point than the second listed member of the pair?

Considering change of state descriptions, select the name of the change of state that involves both the liquid and solid state.

Which of the following statements concerning evaporation is incorrect?

Which of the following is a correct equation for the combined gas law?

Considering change of state descriptions, select the name of the change of state for that involves both the liquid and gaseous state.

The correct form of the equation for the ideal gas law is

Which of the following pressure relationships is correct?

Which of the following is not a factor in determining the magnitude of the vapor pressure of a liquid?

Which of the following statements is not a part of kinetic molecular theory?

For each of the physical state characterizations, select from the response list the physical state or states to which the characterizations apply: indefinite shape.

In which of the following groupings are the three terms closely related?

The boiling point of a liquid is

Boyle's law involves which of the following?

A volatile liquid would

For each of the physical state characterizations, select from the response list the physical state or states to which the characterizations apply: potential energy dominates over kinetic energy.

The partial pressure of helium in a gaseous mixture of helium and nitrogen trifluoride is

In which of the following liquids would London forces be the predominant intermolecular force?

Basic Concepts About Matter

Measurements in Chemistry

Atomic Structure and the Periodic Table

Chemical Bonding: the Ionic Bond Model

Chemical Bonding: the Covalent Bond Model

Chemical Calculations: Formula Masses, Moles, and Chemical Equations

Solutions

Chemical Reactions

Acids, Bases, and Salts

Nuclear Chemistry

Saturated Hydrocarbons

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids, Esters, and Other Acid Derivatives

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes and Vitamins

Nucleic Acids

Biochemical Energy Production

Carbohydrate Metabolism

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Protein Metabolism

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