Question 1

Which bond in acetone, shown below, is correctly labeled with a dipole arrow?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e C

Question 2

What happens to the speed of molecules when the molecules are frozen?

Accepted Answer

A)  The speed stays the same. 
B)  The molecules speed up. 
C)  The molecules slow down. 
D)  The speed does not change in a predictable way. 
E)  The molecules stop moving completely. 
A)  The speed stays the same. 
B)  The molecules speed up. 
C)  The molecules slow down. 
D)  The speed does not change in a predictable way. 
E)  The molecules stop moving completely. C

Question 3

Which of the following statements best describes the process that occurs when air is inhaled into the lungs?

Accepted Answer

A)  The diaphragm moves up, the lungs expand, pressure decreases, and air is inhaled. 
B)  The diaphragm moves down, the lungs expand, pressure decreases, and air is inhaled. 
C)  The diaphragm moves up, the lungs contract, pressure increases, and air is inhaled. 
D)  The diaphragm moves down, the lungs expand, pressure increases, and air is inhaled. 
E)  The diaphragm moves down, the lungs contract, pressure decreases, and air is inhaled. 
A)  The diaphragm moves up, the lungs expand, pressure decreases, and air is inhaled. 
B)  The diaphragm moves down, the lungs expand, pressure decreases, and air is inhaled. 
C)  The diaphragm moves up, the lungs contract, pressure increases, and air is inhaled. 
D)  The diaphragm moves down, the lungs expand, pressure increases, and air is inhaled. 
E)  The diaphragm moves down, the lungs contract, pressure decreases, and air is inhaled. B

Question 4

Three boxes, each containing molecules in the gas phase, are illustrated below. Which box would you expect to have the highest pressure?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  A and B have the same highest pressure. 
E)  A and C have the same highest pressure. 
A)  A 
B)  B 
C)  C 
D)  A and B have the same highest pressure. 
E)  A and C have the same highest pressure.

Question 5

Imagine that you have a beaker of gas molecules. A small volume of the gas in the beaker is enlarged so you can see the gas particles. If all of the gas in the beaker A is transferred to a new beaker half the size of the original beaker, while maintaining the same temperature, which magnified view best represents what the gas would look like?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Question 6

Hyperbaric oxygen therapy is the use of ________ to treat a variety of medical conditions.

Accepted Answer

A)  pure oxygen 
B)  oxygen at a pressure higher than atmospheric pressure 
C)  air without oxygen 
D)  oxygen at a pressure lower than atmospheric pressure 
E)  an oxygen tank 
A)  pure oxygen 
B)  oxygen at a pressure higher than atmospheric pressure 
C)  air without oxygen 
D)  oxygen at a pressure lower than atmospheric pressure 
E)  an oxygen tank

Question 7

It is important to check tire pressure periodically, especially when the outside temperature drops. You can see why this is so by calculating the tire volume after a large drop in temperature as follows: A well-inflated tire holds about 11 L of air at 298 K (25F1F1F1S1F1F1F10C). If the temperature drops to 273 K (0F1F1F1S1F1F1F10C), what is the new volume of the air in the tire?

Accepted Answer

A)  It is not possible to determine because the temperature has dropped to 0F1F1F1S1F1F1F10C. 
B)  0 L 
C)  10. L 
D)  12 L 
E)  7300 L 
A)  It is not possible to determine because the temperature has dropped to 0F1F1F1S1F1F1F10C. 
B)  0 L 
C)  10. L 
D)  12 L 
E)  7300 L

Question 8

Which of the following is the molar volume of a gas at STP?

Accepted Answer

A)  The molar volume depends on the gas. 
B)  1 L 
C)  1 mole 
D)  6.02 F1F1F1S1F1F1F10 1023 L 
E)  22.4 L 
A)  The molar volume depends on the gas. 
B)  1 L 
C)  1 mole 
D)  6.02 F1F1F1S1F1F1F10 1023 L 
E)  22.4 L

Question 9

Which arrow best shows the molecular dipole of acetone?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Question 10

Which statement best describes why it is important to know the vapor pressure of a material before working with it?

Accepted Answer

A)  It is not important because the risk of inhalation increases for materials with low vapor pressure. 
B)  It is not important because the risk of inhalation increases for materials with high vapor pressure. 
C)  It is not important because the toxicity increases for materials with low vapor pressure. 
D)  It is not important because the toxicity increases for materials with high vapor pressure. 
E)  It is not important to know the vapor pressure of materials. 
A)  It is not important because the risk of inhalation increases for materials with low vapor pressure. 
B)  It is not important because the risk of inhalation increases for materials with high vapor pressure. 
C)  It is not important because the toxicity increases for materials with low vapor pressure. 
D)  It is not important because the toxicity increases for materials with high vapor pressure. 
E)  It is not important to know the vapor pressure of materials.

Question 11

How do phase changes differ from chemical reactions?

Accepted Answer

A)  There is no difference between them. 
B)  Phase changes occur more rapidly than chemical reactions. 
C)  Only chemical reactions involve changes in energy. 
D)  Only chemical reactions follow the conservation of matter. 
E)  Phase changes do not involve breaking or making covalent bonds. 
A)  There is no difference between them. 
B)  Phase changes occur more rapidly than chemical reactions. 
C)  Only chemical reactions involve changes in energy. 
D)  Only chemical reactions follow the conservation of matter. 
E)  Phase changes do not involve breaking or making covalent bonds.

Question 12

Which of the following statements best describes pressure?

Accepted Answer

A)  Pressure is heat energy applied to a given volume. 
B)  Pressure is heat energy applied to a given area. 
C)  Pressure is force applied to a given volume. 
D)  Pressure is force applied to a given area. 
E)  Pressure is heat energy or force applied to a substance. 
A)  Pressure is heat energy applied to a given volume. 
B)  Pressure is heat energy applied to a given area. 
C)  Pressure is force applied to a given volume. 
D)  Pressure is force applied to a given area. 
E)  Pressure is heat energy or force applied to a substance.

Question 13

A nitrogen bubble with a volume of 0.0050 mL forms in the joint of a scuba diver as she ascends rapidly from a pressure of 4.1 atm to the surface, with a pressure of 1.0 atm. What is the volume of the bubble at the surface?

Accepted Answer

A)  820 mL 
B)  4.1 mL 
C)  0.0012 mL 
D)  0.021 mL 
E)  0.0050 mL 
A)  820 mL 
B)  4.1 mL 
C)  0.0012 mL 
D)  0.021 mL 
E)  0.0050 mL

Question 14

Henry's constant for halothane, an anesthetic, is higher than that of ether. Which anesthetic would you expect to be faster acting?

Accepted Answer

A)  They would act at the same rates. 
B)  Halothane would act slower because it would diffuse through tissue rather than being transported by the blood. 
C)  Halothane would act faster because it would diffuse through tissue rather than being transported by the blood. 
D)  Ether would act slower because it would diffuse through tissue rather than being transported by the blood. 
E)  Ether would act faster because it would diffuse through tissue rather than being transported by the blood. 
A)  They would act at the same rates. 
B)  Halothane would act slower because it would diffuse through tissue rather than being transported by the blood. 
C)  Halothane would act faster because it would diffuse through tissue rather than being transported by the blood. 
D)  Ether would act slower because it would diffuse through tissue rather than being transported by the blood. 
E)  Ether would act faster because it would diffuse through tissue rather than being transported by the blood.

Question 15

What happens when a large volume of gas is compressed to a smaller volume??

Accepted Answer

A)  There are more gas particles in the same volume. 
B)  The particles shrink. 
C)  The gas particles would expand in comparison to the size of the beaker. 
D)  Compressing the gas would likely result in gas particles lost to the atmosphere. 
E)  Compressing the gas is just a physical change and so should not effect how the gas particles look. 
A)  There are more gas particles in the same volume. 
B)  The particles shrink. 
C)  The gas particles would expand in comparison to the size of the beaker. 
D)  Compressing the gas would likely result in gas particles lost to the atmosphere. 
E)  Compressing the gas is just a physical change and so should not effect how the gas particles look.

Question 16

To accomplish the change of phase shown in the diagram below, you could

Accepted Answer

A)  drink a glass of water. 
B)  put water in the freezer. 
C)  boil water. 
D)  leave a glass of water on the kitchen counter. 
E)  let an ice cube melt in the sink. 
A)  drink a glass of water. 
B)  put water in the freezer. 
C)  boil water. 
D)  leave a glass of water on the kitchen counter. 
E)  let an ice cube melt in the sink.

Question 17

How are vaporization and evaporation similar?

Accepted Answer

A)  Both occur only at high temperatures. 
B)  Both occur only at very low temperatures. 
C)  Both are the transformation of liquid into a gas. 
D)  Both always involve water. 
E)  Vaporization and evaporation mean exactly the same thing. 
A)  Both occur only at high temperatures. 
B)  Both occur only at very low temperatures. 
C)  Both are the transformation of liquid into a gas. 
D)  Both always involve water. 
E)  Vaporization and evaporation mean exactly the same thing.

Question 18

The total pressure in a mixture of gases is equal to the partial pressure(s) of

Accepted Answer

A)  the gas present in the greatest quantity. 
B)  all of the gases added together. 
C)  the gas with the greatest volatility. 
D)  the gas that is most important. 
E)  the gas with the greatest partial pressure. 
A)  the gas present in the greatest quantity. 
B)  all of the gases added together. 
C)  the gas with the greatest volatility. 
D)  the gas that is most important. 
E)  the gas with the greatest partial pressure.

Question 19

This diagram shows balloons of various sizes filled with helium gas. Balloon A is at STP. If you heat balloon A, which balloon would you predict would best represent the new size of balloon A?

Accepted Answer

A)  balloon B 
B)  balloon C 
C)  balloon D 
D)  either balloon B or D 
E)  either balloon C or D 
A)  balloon B 
B)  balloon C 
C)  balloon D 
D)  either balloon B or D 
E)  either balloon C or D

Question 20

Acetone, shown here, is a common solvent and component of fingernail polish remover. Which of the following Lewis structures is acetone?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Which bond in acetone, shown below, is correctly labeled with a dipole arrow?

What happens to the speed of molecules when the molecules are frozen?

Which of the following statements best describes the process that occurs when air is inhaled into the lungs?

Three boxes, each containing molecules in the gas phase, are illustrated below. Which box would you expect to have the highest pressure?

Hyperbaric oxygen therapy is the use of ________ to treat a variety of medical conditions.

Which of the following is the molar volume of a gas at STP?

Which arrow best shows the molecular dipole of acetone?

Which statement best describes why it is important to know the vapor pressure of a material before working with it?

How do phase changes differ from chemical reactions?

Which of the following statements best describes pressure?

A nitrogen bubble with a volume of 0.0050 mL forms in the joint of a scuba diver as she ascends rapidly from a pressure of 4.1 atm to the surface, with a pressure of 1.0 atm. What is the volume of the bubble at the surface?

Henry's constant for halothane, an anesthetic, is higher than that of ether. Which anesthetic would you expect to be faster acting?

What happens when a large volume of gas is compressed to a smaller volume??

To accomplish the change of phase shown in the diagram below, you could

How are vaporization and evaporation similar?

The total pressure in a mixture of gases is equal to the partial pressure(s) of

This diagram shows balloons of various sizes filled with helium gas. Balloon A is at STP. If you heat balloon A, which balloon would you predict would best represent the new size of balloon A?

Acetone, shown here, is a common solvent and component of fingernail polish remover. Which of the following Lewis structures is acetone?

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Compounds and Molecules

Chemical Quantities and Chemical Reactions

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

Acids and Bases

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

Exam 5: Changes of State and the Gas Laws

Which bond in acetone, shown below, is correctly labeled with a dipole arrow?

What happens to the speed of molecules when the molecules are frozen?

Which of the following statements best describes the process that occurs when air is inhaled into the lungs?

Three boxes, each containing molecules in the gas phase, are illustrated below. Which box would you expect to have the highest pressure?

Hyperbaric oxygen therapy is the use of ________ to treat a variety of medical conditions.

Which of the following is the molar volume of a gas at STP?

Which arrow best shows the molecular dipole of acetone?

Which statement best describes why it is important to know the vapor pressure of a material before working with it?

How do phase changes differ from chemical reactions?

Which of the following statements best describes pressure?

A nitrogen bubble with a volume of 0.0050 mL forms in the joint of a scuba diver as she ascends rapidly from a pressure of 4.1 atm to the surface, with a pressure of 1.0 atm. What is the volume of the bubble at the surface?

Henry's constant for halothane, an anesthetic, is higher than that of ether. Which anesthetic would you expect to be faster acting?

What happens when a large volume of gas is compressed to a smaller volume??

To accomplish the change of phase shown in the diagram below, you could

How are vaporization and evaporation similar?

The total pressure in a mixture of gases is equal to the partial pressure(s) of

This diagram shows balloons of various sizes filled with helium gas. Balloon A is at STP. If you heat balloon A, which balloon would you predict would best represent the new size of balloon A?

Acetone, shown here, is a common solvent and component of fingernail polish remover. Which of the following Lewis structures is acetone?

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Compounds and Molecules

Chemical Quantities and Chemical Reactions

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

Acids and Bases

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters