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General Organic and Biological Chemistry 6th Edition Stoker Test Bank

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General Organic and Biological Chemistry 6th Edition Stoker Test Bank

ISBN-13: 978-1133103943

ISBN-10: 1133103944

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General Organic and Biological Chemistry 6th Edition Stoker Test Bank

ISBN-13: 978-1133103943

ISBN-10: 1133103944

 

 

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CHAPTER 7: GASES, LIQUIDS, AND SOLIDS

 

MULTIPLE CHOICE

 

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

 

 

ANS:   C                     DIF:    Moderate

KEY:   Chemistry | general chemistry | kinetic molecular theory     NOT:   Section 7.1

 

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

 

 

ANS:   D                     DIF:    Moderate

KEY:   Chemistry | general chemistry | kinetic molecular theory     NOT:   Section 7.1

 

  1. In the liquid state, disruptive forces are
a. roughly of the same magnitude as cohesive forces
b. very weak compared to cohesive forces
c. dominant over cohesive forces
d. unimportant

 

 

ANS:   A                     DIF:    Easy

KEY:   Chemistry | general chemistry | kinetic molecular theory | phases

NOT:   Section 7.2

 

  1. The phrases “particles close together and held in fixed positions” and “completely fills the container” apply, respectively, to
a. liquids and solids c. gases and liquids
b. solids and gases d. liquids and gases

 

 

ANS:   B                     DIF:    Easy

KEY:   Chemistry | general chemistry | kinetic molecular theory | phases

NOT:   Section 7.2

 

  1. How many times larger in size is the atmosphere pressure unit than the mm Hg pressure unit?
a. 100 c. 760
b. 325 d. 1000

 

 

ANS:   C                     DIF:    Moderate        KEY:   Chemistry | general chemistry | gas laws

NOT:   Section 7.3

 

  1. Boyle’s law involves which of the following?
a. a direct proportion c. a constant pressure
b. a constant volume d. a constant temperature

 

 

ANS:   D                     DIF:    Moderate

KEY:   Chemistry | general chemistry | gas laws | Boyle’s law         NOT:   Section 7.4

 

  1. Indicate what the missing words are in the following statement of Charles’s law: At constant pressure, the volume of a gas sample is _______ proportional to its _______ temperature.
a. directly; Celsius c. inversely; Celsius
b. directly; Kelvin d. inversely; Kelvin

 

 

ANS:   B                     DIF:    Moderate

KEY:   Chemistry | general chemistry | gas laws | Charle’s Law       NOT:   Section 7.5

 

  1. A gas has a volume of 2.60 liters at a temperature of 87°C and pressure of 1.30 atm. What is the volume of the gas, in liters, at a temperature of 367°C and a pressure of 4.70 atm?
a. 0.782 L c. 0.405 L
b. 1.28 L d. 9.80 ´ 104 L

 

 

ANS:   B                     DIF:    Moderate

KEY:   Chemistry | general chemistry | gas laws | combined gas law

NOT:   Section 7.6

 

  1. The correct form of the equation for the ideal gas law is
a. PV = nRT c. P/V = nRT
b. PT = nRV d. PV = n/RT

 

 

ANS:   A                     DIF:    Easy

KEY:   Chemistry | general chemistry | gas laws | ideal gas law       NOT:   Section 7.7

 

  1. What is the volume, in liters, occupied by 2.12 moles of N2 gas at 0.745 atm pressure and a temperature of 55°C?
a. 42.5 L c. 76.6 L
b. 1.3 ´ 10-2 L d. 12.8 L

 

 

ANS:   C                     DIF:    Moderate

KEY:   Chemistry | general chemistry | gas laws | ideal gas law       NOT:   Section 7.7

 

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

 

 

ANS:   A                     DIF:    Moderate

KEY:   Chemistry | general chemistry | gas laws | Dalton’s law        NOT:   Section 7.8

 

 

  1. In which of the following pairs of physical changes are both changes exothermic?
a. sublimation, evaporation c. freezing, condensation
b. freezing, melting d. melting, sublimation

 

 

ANS:   C                     DIF:    Moderate

KEY:   Chemistry | general chemistry | changes of state | energy changes

NOT:   Section 7.9

 

  1. Which of the following statements concerning evaporation is incorrect?
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.

 

 

ANS:   B                     DIF:    Difficult

KEY:   Chemistry | general chemistry | evaporation                         NOT:   Section 7.10

 

  1. Which of the following is not a factor in determining the magnitude of the vapor pressure of a 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

 

 

ANS:   C                     DIF:    Difficult

KEY:   Chemistry | general chemistry | vapor pressure                     NOT:   Section 7.11

 

  1. The boiling point of a liquid is
a. the temperature at which the rate of evaporation and sublimation are equal
b. always 200°C 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

 

 

ANS:   C                     DIF:    Moderate        KEY:   Chemistry | general chemistry | boiling

NOT:   Section 7.12

 

  1. A liquid is placed in a closed container. Equilibrium is reached when
a. all of the liquid evaporates
b. when the rate of condensation equals the rate of evaporation
c. when the rate of condensation exceeds the rate of evaporation
d. when molecules cease to pass from the liquid state to the vapor state

 

 

ANS:   B                     DIF:    Moderate

KEY:   Chemistry | general chemistry | equilibrium | physical change

NOT:   Section 7.11

 

 

  1. Liquids will boil at lower temperatures at higher elevations because:
a. The intermolecular attractions are weaker.
b. Atmospheric pressure increases.
c. It is harder to transfer heat to the liquid.
d. The vapor pressure at which boiling occurs is lower.

 

 

ANS:   D                     DIF:    Moderate        KEY:   Chemistry | general chemistry | boiling

NOT:   Section 7.12

 

  1. Which of the following statements about intermolecular forces is incorrect?
a. They must be overcome in order for molecules to escape from the liquid state into the vapor state.
b. They are much weaker than intramolecular forces.
c. They are electrostatic in origin.
d. They occur within molecules rather than between molecules.

 

 

ANS:   D                     DIF:    Difficult

KEY:   Chemistry | general chemistry | intermolecular forces          NOT:   Section 7.13

 

  1. Which of the following statements is correct?
a. Dipole-dipole interactions occur only between nonpolar molecules.
b. A hydrogen bond is an extremely weak dipole-dipole interaction.
c. London forces are “instantaneous” dipole-dipole interactions.
d. Hydrogen bonding occurs anytime a hydrogen-containing molecule is present in a liquid.

 

 

ANS:   C                     DIF:    Moderate

KEY:   Chemistry | general chemistry | intermolecular forces          NOT:   Section 7.13

 

  1. In which of the following liquids would London forces be the predominant intermolecular force?
a. HCN c. H2S
b. N2 d. IF

 

 

ANS:   B                     DIF:    Moderate

KEY:   Chemistry | general chemistry | intermolecular forces          NOT:   Section 7.13

 

  1. Which of the following descriptions apply to matter in the solid state?
a. definite shape and high density
b. cohesive forces dominate over disruptive forces
c. kinetic energy dominates over potential energy
d. more than one correct response
e. no correct response

 

 

ANS:   D                     DIF:    Moderate

KEY:   Chemistry | general chemistry | kinetic molecular theory | phases

NOT:   Section 7.2

 

 

  1. Which of the following descriptions apply to matter in the liquid state?
a. Temperature change significantly influences the volume.
b. Particles are less free to move about than in the solid state.
c. Particles transfer energy from one to another through collisions.
d. More than one correct response.
e. No correct response.

 

 

ANS:   C                     DIF:    Difficult

KEY:   Chemistry | general chemistry | kinetic molecular theory | phases

NOT:   Section 7.2

 

  1. Which of the following descriptions apply to matter in the gaseous state?
a. Definite shape and definite volume.
b. Disruptive and cohesive forces are about equal.
c. Pressure change significantly influences the volume.
d. More than one correct response.
e. No correct response.

 

 

ANS:   C                     DIF:    Difficult

KEY:   Chemistry | general chemistry | kinetic molecular theory | phases

NOT:   Section 7.2

 

  1. Which of the following pressure relationships is correct?
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

 

 

ANS:   A                     DIF:    Easy                KEY:   Chemistry | general chemistry | gas laws

NOT:   Section 7.3

 

  1. Charles’s law involves which of the following?
a. an indirect proportion
b. a fixed quantity of gas
c. constant temperature
d. more than one correct response
e. no correct response

 

 

ANS:   B                     DIF:    Moderate

KEY:   Chemistry | general chemistry | gas laws | Charle’s Law       NOT:   Section 7.5

 

  1. Which of the following samples of gas would have a new volume of 3.00 liters if the pressure is decreased from 3.00 atm to 1.00 atm at constant temperature?
a. 1.00 L He
b. 5.00 L CO2
c. 9.00 L H2S
d. more than one correct response
e. no correct response

ANS:   A                     DIF:    Easy

KEY:   Chemistry | general chemistry | gas laws | Boyle’s law         NOT:   Section 7.4

 

  1. Which of the following is a correct equation for the combined gas law?
a.
b.
c.
d. more than one correct response
e. no correct response

 

 

ANS:   E                     DIF:    Moderate

KEY:   Chemistry | general chemistry | gas laws | combined gas law

NOT:   Section 7.6

 

  1. A 1.00 mole sample of a gas would have a volume of 0.821 L at which of the following temperature and pressure conditions?
a. 300 K and 30.0 atm
b. –123° C and 15.0 atm
c. 300° C and 10.0 atm
d. more than one correct response
e. no correct response

 

 

ANS:   D                     DIF:    Moderate

KEY:   Chemistry | general chemistry | gas laws | ideal gas law       NOT:   Section 7.7

 

  1. A gaseous mixture at a total pressure of 1.50 atm contains equal molar amounts of He, Ne, and Ar. At constant temperature CO2 gas is added to the mixture until the total pressure is 3.00 atm. Which of the following is a correct statement concerning partial pressures after the CO2 addition?
a. The partial pressure of Ar has doubled.
b. The partial pressure of CO2 is three times that of Ne.
c. All four gases have equal partial pressures.
d. More than one correct response.
e. No correct response.

 

 

ANS:   B                     DIF:    Moderate

KEY:   Chemistry | general chemistry | gas laws | Dalton’s law        NOT:   Section 7.8

 

 

  1. In which of the following pairs of state changes is the final state (solid, liquid, gas) the same for both members of the pair?
a. sublimation and evaporation
b. condensation and freezing
c. deposition and melting
d. more than one correct response
e. no correct response

 

 

ANS:   A                     DIF:    Easy

KEY:   Chemistry | general chemistry | changes of state                   NOT:   Section 7.9

 

  1. If some of the vapor is allowed to escape from a sample where liquid and vapor are in equilibrium, the immediate result is
a. an increase in intermolecular force strength
b. a decrease in condensation rate
c. a decrease in evaporation rate
d. more than one correct response
e. no correct response

 

 

ANS:   B                     DIF:    Difficult

KEY:   Chemistry | general chemistry | evaporation; vapor pressure

NOT:   Section 7.11

 

  1. When the vapor pressure of a liquid equals atmospheric pressure, the temperature of the liquid equals
a. 100° C if the liquid is at sea level
b. the boiling point of the liquid
c. the normal boiling point of the liquid
d. more than one correct response
e. no correct response

 

 

ANS:   B                     DIF:    Moderate

KEY:   Chemistry | general chemistry | boiling; vapor pressure        NOT:   Section 7.12

 

  1. A volatile liquid would
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

 

 

ANS:   A                     DIF:    Moderate

KEY:   Chemistry | general chemistry | vapor pressure                     NOT:   Section 7.11

 

 

  1. Intermolecular forces differ from intramolecular forces in that:
a. They occur only in liquids.
b. They are much stronger.
c. They occur only when hydrogen atoms are present.
d. More than one correct response.
e. No correct response.

 

 

ANS:   E                     DIF:    Moderate

KEY:   Chemistry | general chemistry | intermolecular forces          NOT:   Section 7.13

 

  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?
a. HF and HBr
b. F2 and Cl2
c. O2 and NO
d. more than one correct response
e. no correct response

 

 

ANS:   A                     DIF:    Difficult

KEY:   Chemistry | general chemistry | intermolecular forces          NOT:   Section 7.13

 

  1. 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.

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.

 

 

ANS:   C                     DIF:    Difficult

KEY:   Chemistry | general chemistry | gas laws; intermolecular forces; kinetic molecular theory  NOT:            Section 7.1| Section 7.13| Section 7.3

 

  1. 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) Sublimation and deposition are “opposite” changes of state.

(2) A pressure of one atmosphere is greater in magnitude than a pressure of 720 torr.

(3) The boiling point of a liquid can be increased by heating the liquid to a higher temperature.

 

 

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.

 

 

ANS:   C                     DIF:    Moderate

KEY:   Chemistry | general chemistry | boiling; changes of state; gas laws

NOT:   Section 7.12| Section 7.3| Section 7.9

 

  1. 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) Associated with Charles’s law is the concept that if the temperature of a gas increases the volume of the gas also increases.

(2) Liquids show little change in volume with changes in temperature.

(3) Dipole-dipole interactions are examples of intramolecular forces and hydrogen bonds are examples of intermolecular forces.

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.

 

 

ANS:   C                     DIF:    Moderate

KEY:   Chemistry | general chemistry | gas laws; intermolecular forces; kinetic molecular theory | Charle’s Law; phases                            NOT:              Section 7.13| Section 7.2| Section 7.5

 

  1. 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.

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.

 

 

ANS:   C                     DIF:    Moderate

KEY:   Chemistry | general chemistry | equilibrium; gas laws; kinetic molecular theory | Boyle’s law; phases; physical change          NOT:   Section 7.11| Section 7.2| Section 7.4

 

 

  1. 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) Both dipole-dipole interactions and hydrogen bonds are stronger than most single covalent bonds.

(2) The value of the ideal gas constant is the same for all gases under ordinary conditions of P, V, and T.

(3) Both condensation and freezing are endothermic changes of state.

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.

 

 

ANS:   C                     DIF:    Moderate

KEY:   Chemistry | general chemistry | changes of state; gas laws; intermolecular forces | Boyle’s law            NOT:               Section 7.13| Section 7.7| Section 7.9

 

  1. 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 potential energy of greatest importance when considering the states of matter is that associated with electrostatic interactions between particles.

(2) The pressure exerted by each gas in a mixture of gases is the same as it would be if the gas were alone under the same conditions.

(3) London forces are instantaneous dipole-dipole interactions whose strength depends on the ease with which molecular electron distributions can be distorted.

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.

 

 

ANS:   A                     DIF:    Difficult

KEY:   Chemistry | general chemistry | gas laws; intermolecular forces; kinetic molecular theory | Dalton’s law                                                NOT:              Section 7.1| Section 7.13| Section 7.8

 

  1. 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 process of breathing is readily explained using Charles’s law.

(2) In a molecular system, kinetic energy is considered to be a disruptive force.

(3) A pressure of 200 mm Hg and a pressure of 200 torr are equal.

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.

 

 

 

ANS:   B                     DIF:    Moderate

KEY:   Chemistry | general chemistry | gas laws; kinetic molecular theory

NOT:   Section 7.1| Section 7.3| Section 7.5

 

  1. 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.

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.

 

 

ANS:   D                     DIF:    Moderate

KEY:   Chemistry | general chemistry | boiling; gas laws; intermolecular forces | ideal gas law      NOT:            Section 7.12| Section 7.13| Section 7.7

 

  1. 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) Water’s boiling point is much lower than expected, based on comparison with other substances, because of hydrogen bonding.

(2) In the gaseous state, disruptive forces and cohesive forces are of about the same magnitude.

(3) As liquid surface area increases, the rate of evaporation of a liquid increases because molecules encounter less external pressure.

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.

 

 

ANS:   D                     DIF:    Moderate

KEY:   Chemistry | general chemistry | evaporation; intermolecular forces; kinetic molecular theory            NOT:               Section 7.1| Section 7.10| Section 7.13

 

  1. 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 destructive power of industrial explosives comes from the high-temperature generation of large volumes of gaseous substances.

(2) Ideally, the dietary Na+/K+ ratio should be less than one.

(3) Popcorn pops because of the difference in density of liquid and gaseous water.

 

 

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.

 

 

ANS:   A                     DIF:    Moderate        KEY:   Chemistry | general chemistry | gas laws

NOT:   Section chemical connections

 

  1. For each of the physical state characterizations, select from the response list the physical state or states to which the characterizations apply:  indefinite shape.
a. liquid state only c. both liquid and solid states
b. solid state only d. both gaseous and liquid states

 

 

ANS:   D                     DIF:    Easy

KEY:   Chemistry | general chemistry | kinetic molecular theory | phases

NOT:   Section 7.2

 

  1. For each of the physical state characterizations, select from the response list the physical state or states to which the characterizations apply:  definite volume.
a. liquid state only c. both liquid and solid states
b. solid state only d. both gaseous and liquid states

 

 

ANS:   C                     DIF:    Easy

KEY:   Chemistry | general chemistry | kinetic molecular theory | phases

NOT:   Section 7.2

 

  1. For each of the physical state characterizations, select from the response list the physical state or states to which the characterizations apply:  cohesive forces dominate over disruptive forces.
a. liquid state only c. both liquid and solid states
b. solid state only d. both gaseous and liquid states

 

 

ANS:   B                     DIF:    Easy

KEY:   Chemistry | general chemistry | kinetic molecular theory | phases

NOT:   Section 7.2

 

  1. 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.
a. liquid state only c. both liquid and solid states
b. solid state only d. both gaseous and liquid states

 

 

ANS:   B                     DIF:    Easy

KEY:   Chemistry | general chemistry | kinetic molecular theory | phases

NOT:   Section 7.2

 

 

  1. For each of the physical state characterizations, select from the response list the physical state or states to which the characterizations apply:  particles are relatively close together.
a. liquid state only c. both liquid and solid states
b. solid state only d. both gaseous and liquid states

 

 

ANS:   C                     DIF:    Easy

KEY:   Chemistry | general chemistry | kinetic molecular theory | phases

NOT:   Section 7.2

 

  1. Consider the mathematical expressions for gas laws listed, select the correct name for the law from the response list:  P1V1 = P2V2.
a. Avogadro’s law c. Charles’s law
b. Boyle’s law d. combined gas law

 

 

ANS:   B                     DIF:    Easy

KEY:   Chemistry | general chemistry | gas laws | Boyle’s law         NOT:   Section 7.4

 

  1. Consider the mathematical expressions for gas laws listed, select the correct name for the law from the response list:
a. Avogadro’s law c. Charles’s law
b. Boyle’s law d. combined gas law

 

 

ANS:   C                     DIF:    Easy

KEY:   Chemistry | general chemistry | gas laws | Charle’s Law       NOT:   Section 7.5

 

  1. Consider the mathematical expressions for gas laws listed, select the correct name for the law from the response list:  P1V1T2 = P2V2T1.
a. Avogadro’s law c. Charles’s law
b. Boyle’s law d. combined gas law

 

 

ANS:   D                     DIF:    Moderate

KEY:   Chemistry | general chemistry | gas laws | combined gas law

NOT:   Section 7.6

 

  1. Consider the mathematical expressions for gas laws listed, select the correct name for the law from the response list:
a. Avogadro’s law c. Charles’s law
b. Boyle’s law d. combined gas law

 

 

ANS:   A                     DIF:    Moderate

KEY:   Chemistry | general chemistry | gas laws | Avogadro’s law   NOT:   Section 7.7

 

 

  1. Consider the mathematical expressions for gas laws listed, select the correct name for the law from the response list:  V1T2 = V2T1.
a. Avogadro’s law c. Charles’s law
b. Boyle’s law d. combined gas law

 

 

ANS:   C                     DIF:    Moderate

KEY:   Chemistry | general chemistry | gas laws | Charle’s Law       NOT:   Section 7.5

 

  1. Considering change of state descriptions, select the name of the change of state for an endothermic change
a. sublimation c. deposition
b. condensation d. freezing

 

 

ANS:   A                     DIF:    Moderate

KEY:   Chemistry | general chemistry | changes of state | energy changes

NOT:   Section 7.9

 

  1. Considering change of state descriptions, select the name of the change of state for the opposite of evaporation.
a. sublimation c. deposition
b. condensation d. freezing

 

 

ANS:   B                     DIF:    Easy

KEY:   Chemistry | general chemistry | changes of state                   NOT:   Section 7.9

 

  1. Considering change of state descriptions, select the name of the change of state for when energy is absorbed.
a. sublimation c. deposition
b. condensation d. freezing

 

 

ANS:   A                     DIF:    Moderate

KEY:   Chemistry | general chemistry | changes of state | energy changes

NOT:   Section 7.9

 

  1. Considering change of state descriptions, select the name of the change of state that involves both the liquid and solid state.
a. sublimation c. deposition
b. condensation d. freezing

 

 

ANS:   D                     DIF:    Easy

KEY:   Chemistry | general chemistry | changes of state                   NOT:   Section 7.9

 

  1. Considering change of state descriptions, select the name of the change of state for that involves both the liquid and gaseous state.
a. sublimation c. deposition
b. condensation d. freezing

 

 

ANS:   B                     DIF:    Easy

KEY:   Chemistry | general chemistry | changes of state                   NOT:   Section 7.9

 

Use the following to answer the questions below:

 

Characterize the effect that each of the changes will have on the vapor pressure and boiling point of a liquid using the response list. Responses on the right may be used more than once or need not be used at all.

  1. a) v.p. decreases

b.p. decreases

 

  1. b) v.p. decreases

b.p. does not change

 

  1. c) v.p. does not change

b.p. does not change

 

  1. d) v.p. does not change

b.p. decreases

 

  1. Characterize the effect that changes will have on the vapor pressure and boiling point of a liquid by decreasing the external pressure on the surface of a liquid at constant temperature.
a. v.p. decreases, b.p. decreases
b. v.p. decreases, b.p. does not change
c. v.p. does not change, b.p. does not change
d. v.p. does not change, b.p. decreases

 

 

ANS:   D                     DIF:    Difficult

KEY:   Chemistry | general chemistry | boiling; vapor pressure

NOT:   Section 7.11| Section 7.12

 

  1. Characterize the effect that changes will have on the vapor pressure and boiling point of a liquid by decreasing the temperature of the liquid by 20° C at constant pressure.
a. v.p. decreases, b.p. decreases
b. v.p. decreases, b.p. does not change
c. v.p. does not change, b.p. does not change
d. v.p. does not change, b.p. decreases

 

 

ANS:   B                     DIF:    Difficult

KEY:   Chemistry | general chemistry | boiling; vapor pressure

NOT:   Section 7.11| Section 7.12

 

  1. Characterize the effect that changes will have on the vapor pressure and boiling point of a liquid when the liquid surface area is increased at constant temperature and pressure.
a. v.p. decreases, b.p. decreases
b. v.p. decreases, b.p. does not change
c. v.p. does not change, b.p. does not change
d. v.p. does not change, b.p. decreases

 

 

ANS:   C                     DIF:    Difficult

KEY:   Chemistry | general chemistry | boiling; vapor pressure

NOT:   Section 7.11| Section 7.13

 

  1. Characterize the effect that changes will have on the vapor pressure and boiling point of a liquid when the liquid is moved to a higher elevation at constant temperature.
a. v.p. decreases, b.p. decreases
b. v.p. decreases, b.p. does not change
c. v.p. does not change, b.p. does not change
d. v.p. does not change, b.p. decreases

 

 

ANS:   D                     DIF:    Difficult

KEY:   Chemistry | general chemistry | boiling; vapor pressure

NOT:   Section 7.11| Section 7.12

 

  1. Characterize the effect that changes will have on the vapor pressure and boiling point of a liquid by decreasing the amount of liquid at constant temperature and pressure.
a. v.p. decreases, b.p. decreases
b. v.p. decreases, b.p. does not change
c. v.p. does not change, b.p. does not change
d. v.p. does not change, b.p. decreases

 

 

ANS:   C                     DIF:    Difficult

KEY:   Chemistry | general chemistry | boiling; vapor pressure

NOT:   Section 7.11| Section 7.12

 

  1. For the following intermolecular force descriptios, select the correct name from the response list:   Strongest of all intermolecular forces.
a. London force c. covalent bond
b. hydrogen bond d. dipole-dipole interaction

 

 

ANS:   B                     DIF:    Moderate

KEY:   Chemistry | general chemistry | intermolecular forces          NOT:   Section 7.13

 

  1. For the following intermolecular force descriptios, select the correct name from the response list:   Weakest of all intermolecular forces.
a. London force c. covalent bond
b. hydrogen bond d. dipole-dipole interaction

 

 

ANS:   A                     DIF:    Moderate

KEY:   Chemistry | general chemistry | intermolecular forces          NOT:   Section 7.13

 

  1. For the following intermolecular force descriptios, select the correct name from the response list:   “Permanent” electrostatic interaction between polar molecules in which no hydrogen is present.
a. London force c. covalent bond
b. hydrogen bond d. dipole-dipole interaction

 

 

ANS:   D                     DIF:    Moderate

KEY:   Chemistry | general chemistry | intermolecular forces          NOT:   Section 7.13

 

 

  1. For the following intermolecular force descriptios, select the correct name from the response list:   “Instantaneous” electrostatic interaction between nonpolar molecules.
a. London force c. covalent bond
b. hydrogen bond d. dipole-dipole interaction

 

 

ANS:   A                     DIF:    Moderate

KEY:   Chemistry | general chemistry | intermolecular forces          NOT:   Section 7.13

 

  1. For the following intermolecular force descriptios, select the correct name from the response list:   “Instantaneous” electrostatic interaction between polar molecules.
a. London force c. covalent bond
b. hydrogen bond d. dipole-dipole interaction

 

 

ANS:   A                     DIF:    Moderate

KEY:   Chemistry | general chemistry | intermolecular forces          NOT:   Section 7.13

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