Chapter 13: Temperature And Kinetic Theory

79 Questions | Total Attempts: 315

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Temperature Quizzes & Trivia

Questions and Answers
  • 1. 
    When the engine of your car heats up, the spark plug gap will
    • A. 

      Increase.

    • B. 

      Decrease.

    • C. 

      Remain unchanged.

    • D. 

      Decrease at first and then increase later, so that the two effects cancel once the engine reaches operating temperature.

  • 2. 
    The coefficient of linear expansion for aluminum is 1.8 * 10^(-6) (C°)^(-1). What is its coefficient of volume expansion?
    • A. 

      9.0 * 10^(-6) (C°)^(-1)

    • B. 

      5.8 * 10^(-18) (C°)^(-1)

    • C. 

      5.4 * 10^(-6) (C°)^(-1)

    • D. 

      3.6 * 10^(-6) (C°)^(-1)

  • 3. 
    The surface water temperature on a large, deep lake is 3°C. A sensitive temperature probe is lowered several meters into the lake. What temperature will the probe record?
    • A. 

      A temperature warmer than 3°C

    • B. 

      A temperature less than 3°C

    • C. 

      A temperature equal to 3°C

    • D. 

      There is not enough information to determine.

  • 4. 
    Which temperature scale never gives negative temperatures?
    • A. 

      Kelvin

    • B. 

      Fahrenheit

    • C. 

      Celsius

    • D. 

      All of the above

  • 5. 
    Which two temperature changes are equivalent?
    • A. 

      1 K = 1 F°

    • B. 

      1 F° = 1 C°

    • C. 

      1 C° = 1 K

    • D. 

      None of the above

  • 6. 
    The temperature in your classroom is approximately
    • A. 

      68 K.

    • B. 

      68°C.

    • C. 

      50°C.

    • D. 

      295 K.

  • 7. 
    A container of an ideal gas at 1 atm is compressed to one-third its volume, with the temperature held constant. What is its final pressure?
    • A. 

      1/3 atm

    • B. 

      1 atm

    • C. 

      3 atm

    • D. 

      9 atm

  • 8. 
    If the pressure acting on an ideal gas at constant temperature is tripled, its volume is
    • A. 

      Reduced to one-third.

    • B. 

      Increased by a factor of three.

    • C. 

      Increased by a factor of two.

    • D. 

      Reduced to one-half.

  • 9. 
    According to the ideal gas Law, PV = constant for a given temperature. As a result, an increase in volume corresponds to a decrease in pressure. This happens because the molecules
    • A. 

      Collide with each other more frequently.

    • B. 

      Move slower on the average.

    • C. 

      Strike the container wall less often.

    • D. 

      Transfer less energy to the walls of the container each time they strike it.

  • 10. 
    The number of molecules in one mole of a substance
    • A. 

      Depends on the molecular weight of the substance.

    • B. 

      Depends on the atomic weight of the substance.

    • C. 

      Depends on the density of the substance.

    • D. 

      Is the same for all substances.

  • 11. 
    A container holds N molecules of an ideal gas at a given temperature. If the number of molecules in the container is increased to 2N with no change in temperature or volume, the pressure in the container
    • A. 

      Doubles.

    • B. 

      Remains constant.

    • C. 

      Is cut in half.

    • D. 

      None of the above

  • 12. 
    Both the pressure and volume of a given sample of an ideal gas double. This means that its temperature in Kelvin must
    • A. 

      Double.

    • B. 

      Quadruple.

    • C. 

      Reduce to one-fourth its original value.

    • D. 

      Remain unchanged.

  • 13. 
    The temperature of an ideal gas increases from 2°C to 4°C while remaining at constant pressure. What happens to the volume of the gas?
    • A. 

      It decreases slightly.

    • B. 

      It decreases to one-half its original volume.

    • C. 

      It increases slightly.

    • D. 

      It increases to twice as much.

  • 14. 
    A mole of diatomic oxygen molecules and a mole of diatomic nitrogen molecules at STP have
    • A. 

      The same average molecular speeds.

    • B. 

      The same number of molecules.

    • C. 

      The same diffusion rates.

    • D. 

      All of the above

  • 15. 
    Consider two equal volumes of gas at a given temperature and pressure. One gas, oxygen, has a molecular mass of 32. The other gas, nitrogen, has a molecular mass of 28. What is the ratio of the number of oxygen molecules to the number of nitrogen molecules?
    • A. 

      32:28

    • B. 

      28:32

    • C. 

      1:1

    • D. 

      None of the above

  • 16. 
    The average molecular kinetic energy of a gas can be determined by knowing only
    • A. 

      The number of molecules in the gas.

    • B. 

      The volume of the gas.

    • C. 

      The pressure of the gas.

    • D. 

      The temperature of the gas.

  • 17. 
    A sample of an ideal gas is slowly compressed to one-half its original volume with no change in temperature. What happens to the average speed of the molecules in the sample?
    • A. 

      It does not change.

    • B. 

      It doubles.

    • C. 

      It halves.

    • D. 

      None of the above

  • 18. 
    A sample of an ideal gas is heated and its Kelvin temperature doubles. What happens to the average speed of the molecules in the sample?
    • A. 

      It does not change.

    • B. 

      It doubles.

    • C. 

      It halves.

    • D. 

      None of the above

  • 19. 
    The absolute temperature of an ideal gas is directly proportional to which of the following?
    • A. 

      Speed

    • B. 

      Momentum

    • C. 

      Kinetic energy

    • D. 

      Mass

  • 20. 
    In order to double the average speed of the molecules in a given sample of gas, the temperature (measured in Kelvin) must
    • A. 

      Quadruple.

    • B. 

      Double.

    • C. 

      Increase by a factor of square root two of its original value.

    • D. 

      Increase by a factor of square root three of its original value.

  • 21. 
    Oxygen molecules are 16 times more massive than hydrogen molecules. At a given temperature, the average molecular kinetic energy of oxygen, compared to hydrogen
    • A. 

      Is greater.

    • B. 

      Is less.

    • C. 

      Is the same.

    • D. 

      Cannot be determined since pressure and volume are not given

  • 22. 
    Oxygen molecules are 16 times more massive than hydrogen molecules. At a given temperature, how do their average molecular speeds compare? The oxygen molecules are moving
    • A. 

      4 times faster.

    • B. 

      At 1/4 the speed.

    • C. 

      16 times faster.

    • D. 

      At 1/16 the speed.

  • 23. 
    A fixed container holds oxygen and helium gases at the same temperature. Which one of the following statements is correct?
    • A. 

      The oxygen molecules have the greater kinetic energy.

    • B. 

      The helium molecules have the greater kinetic energy.

    • C. 

      The oxygen molecules have the greater speed.

    • D. 

      The helium molecules have the greater speed.

  • 24. 
    A container is filled with a mixture of helium and oxygen gases. A thermometer in the container indicates that the temperature is 22°C. Which gas molecules have the greater average kinetic energy?
    • A. 

      It is the same for both because the temperatures are the same.

    • B. 

      The oxygen molecules do because they are diatomic.

    • C. 

      The helium molecules do because they are less massive.

    • D. 

      The helium molecules do because they are monatomic.

  • 25. 
    A container is filled with a mixture of helium and oxygen gases. A thermometer in the container indicates that the temperature is 22°C. Which gas molecules have the greater average speed?
    • A. 

      The helium molecules do because they are monatomic.

    • B. 

      It is the same for both because the temperatures are the same.

    • C. 

      The oxygen molecules do because they are more massive.

    • D. 

      The helium molecules do because they are less massive.

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