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100
Which of the following statements is part of the kinetic theory? a. The particles of a gas move independently of each other. b. The particles in a gas move rapidly. c. The particles in a gas are relatively far apart. d. all of the above
D. all of the above
100
How does the atmospheric pressure at altitudes below sea level compare with atmospheric pressure at sea level? a. The atmospheric pressure below sea level is higher. b. The atmospheric pressure below sea level is lower. c. The pressures are the same. d. Differences in pressures cannot be determined.
A. The atmospheric pressure below sea level is higher.
100
The average kinetic energy of the particles of a substance ____. a. is not affected by the temperature of the substance b. increases as the temperature of the substance is lowered c. is directly proportional to the temperature of the substance d. is equal to the total energy absorbed by the substance
C. is directly proportional to the temperature of the substance
100
Which states of matter can flow? a. gases only c. gases and liquids only b. liquids only d. gases, liquids, and solids
C. gases and liquids only
100
Which of the following will evaporate the fastest? a. water at 0 C b. water at 20 C c. water at 40 C d. All samples will evaporate at the same rate.
C. water at 40 C
200
Which of the following statements is NOT true about the movement of particles in a gas? a. Particles travel in straight-line paths until they collide with other objects. b. Particles usually travel uninterrupted indefinitely. c. Particles fill their containers regardless of the shape or volume of the container. d. The aimless path taken by particles is known as a random walk.
B. Particles usually travel uninterrupted indefinitely.
200
What causes gas pressure in a container such as a helium balloon? a. the walls of the container b. the vacuum maintained in the container c. the simultaneous collisions of fast-moving particles in the container d. atmospheric pressure acting on the outside walls of the container
C. the simultaneous collisions of fast-moving particles in the container
200
When a gas is heated, ____. a. all of the absorbed energy is converted to kinetic energy b. some of the absorbed energy is converted to potential energy, and some is converted to kinetic energy c. all of the absorbed energy is converted to potential energy d. none of the energy is converted to kinetic energy
B. some of the absorbed energy is converted to potential energy, and some is converted to kinetic energy
200
What happens to the temperature of a liquid as it evaporates? a. It increases. c. It does not change. b. It decreases. d. The change cannot be determined.
B. It decreases
200
If a liquid is sealed in a container and kept at constant temperature, how does its vapor pressure change over time? a. It continues to steadily increase. b. It increases at first, then remains constant. c. It increases at first, then decreases. d. It continues to steadily decrease.
B. It increases at first, then remains constant.
300
What instrument is normally used to measure atmospheric pressure? a. thermometer c. vacuum b. barometer d. manometer
B. barometer
300
The pressure of a gas in a container is 152 mm Hg. This is equivalent to ____. a. 0.2 atm c. 0.3 atm b. 2 atm d. 0.4 atm
A. 0.2 atm
300
Consider an iron cube and an aluminum cube. If the two cubes were at the same temperature, how would the average kinetic energy of the particles in iron compare with the average kinetic energy of the particles in aluminum? a. The average kinetic energy of the iron particles would be greater. b. The average kinetic energy of the aluminum particles would be greater. c. There would be no difference in the average kinetic energies. d. No determination can be made based on the information given.
C. There would be no difference in the average kinetic energies.
300
Which are the first particles to evaporate from a liquid? a. particles with the lowest kinetic energy b. particles with the highest kinetic energy c. particles below the surface of the liquid d. All particles evaporate at the same rate.
B. particles with the highest kinetic energy
300
If energy is added to a boiling liquid, what happens to the temperature of the liquid? a. It increases. c. It does not change. b. It decreases. d. The change cannot be determined.
C. It does not change
400
What is one standard atmosphere of pressure in kilopascals? a. 0 kPa c. 101.3 kPa b. 760 kPa d. 1 kPa
C. 101.3 kPa
400
With which temperature scale is temperature directly proportional to average kinetic energy? a. Celsius c. Kelvin b. Fahrenheit d. centigrade
C. Kelvin
400
The average kinetic energy of water molecules is greatest in ____. a. steam at 100 C c. liquid water at 373 K b. liquid water at 90 C d. ice at 0 C
A. steam at 100 C
400
What happens to the rate of evaporation of a liquid as the liquid is cooled? a. It increases. c. It does not change. b. It decreases. d. The change cannot be determined.
B. It decreases
400
What is the pressure when a liquid is boiling at its normal boiling point? a. 0 kPa c. 202 kPa b. 101.3 kPa d. 505 kPa
B. 101.3 kPa
500
Standard conditions when working with gases are defined as ____. a. 0 K and 101.3 kPa c. 0 C and 101.3 kPa b. 0 K and 1 kPa d. 0 C and 1 kPa
C. 0 C and 101.3 kPa
500
What happens to the range of energies of the particles in matter when the temperature is increased? a. The range of energies becomes narrower. b. The range of energies becomes broader. c. The range of energies does not change. d. The range of energies cannot be determined.
B. The range of energies becomes broader.
500
What is the key difference between a liquid and a gas? a. intermolecular attractions c. average kinetic energy b. the ability to flow d. the motion of their particles
A. intermolecular attractions energy
500
Why does a liquid's rate of evaporation increase when the liquid is heated? a. More molecules have enough energy to overcome the attractive forces holding them in the liquid. b. The average kinetic energy of the liquid decreases. c. The surface area of the liquid is reduced. d. The potential energy of the liquid increases.
A. More molecules have enough energy to overcome the attractive forces holding them in the liquid.
500
Water could be made to boil at 105 C instead of 100 C by ____. a. adding a lot of energy to the water b. increasing the external pressure c. decreasing the external pressure d. taking the sample to a higher altitude
B. increasing the external pressure
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