Properties Of Gases

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| By Maria_owens
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Maria_owens
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Quizzes Created: 1 | Total Attempts: 1,427
Questions: 9 | Attempts: 1,435

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Properties Of Gases - Quiz

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Questions and Answers
  • 1. 

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  • 2. 

    As the pressure increases on a gas, the volume of the gas ___________. 

    Explanation
    When the pressure on a gas increases, the gas molecules are forced closer together. This reduces the space between the molecules, resulting in a decrease in volume. Therefore, as the pressure increases, the volume of the gas decreases.

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  • 3. 

    As the temperature of a gas increases, the volume of a gas ___________.

    Explanation
    As we add heat to a gas, the temperature increases, therefore increasing kinetic energy. As kinetic energy increases, this means the particles of the gases move faster, hitting the container wall more often (creating more pressure) and in turn expanding/increasing the volume.

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  • 4. 

    If the temperature of the gas is doubled, the volume of the gas will....

    • A.

      Decrease by a factor of 2

    • B.

      Decrease by a factor of 1/2

    • C.

      Increase by a factor of 2

    • D.

      Increase by a factor of 1/2

    Correct Answer
    C. Increase by a factor of 2
    Explanation
    When the temperature of a gas is doubled, according to Charles's Law, the volume of the gas will also double. This is because as the gas molecules gain more energy from the increase in temperature, they move faster and collide with the container walls more frequently, causing the volume to increase. Therefore, the correct answer is that the volume of the gas will increase by a factor of 2.

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  • 5. 

    If the pressure on a gas doubles, the volume of the gas will....

    • A.

      Double

    • B.

      Half

    • C.

      Not be effected

    • D.

      Quadruple

    Correct Answer
    B. Half
    Explanation
    When the pressure on a gas doubles, according to Boyle's Law, the volume of the gas will decrease by half. This is because as the pressure increases, the gas molecules are compressed closer together, resulting in a decrease in volume.

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  • 6. 

    The force per unit are is known as the ___________.

    Correct Answer
    pressure
    Explanation
    Pressure is defined as the force per unit area. It is a measure of the amount of force applied to a given area. When a force is applied to a surface, the pressure is the force distributed over that surface. It is calculated by dividing the force applied by the area over which it is applied. Therefore, pressure is the correct answer to the given question.

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  • 7. 

    The kinetic molecular theory states that (choose all that apply)....

    • A.

      All molecules of a substance stay in constant motion

    • B.

      All atoms or molecules of a gases have no inter-molecular attractions

    • C.

      Gases will only take up a certain volume, and then stop diffusing

    • D.

      Gases have no set volume

    • E.

      Collisions between molecules are completely elastic (no energy is lost)

    • F.

      Gas molecules do not move

    Correct Answer(s)
    A. All molecules of a substance stay in constant motion
    B. All atoms or molecules of a gases have no inter-molecular attractions
    D. Gases have no set volume
    E. Collisions between molecules are completely elastic (no energy is lost)
    Explanation
    The kinetic molecular theory states that all molecules of a substance stay in constant motion. This means that the particles are always moving and never at rest. Additionally, the theory states that all atoms or molecules of gases have no inter-molecular attractions, meaning that there are no forces of attraction between the particles. Gases have no set volume, as they can expand and contract to fill the space available to them. Finally, collisions between molecules are completely elastic, which means that no energy is lost during these collisions.

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  • 8. 

    The temperature at STP is.....

    Correct Answer(s)
    1 atm
    Explanation
    1 atm
    760 Torr
    760 mmHg

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  • 9. 

    At absolute zero, particles of a gas _______________. 

    Correct Answer(s)
    stop moving
    Explanation
    Absolute zero, or 0 K, means there is no kinetic energy, or movement of molecules.

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  • 10. 

    The temperature at STP is

    Correct Answer(s)
    273 K
    Explanation
    or 0 Celsius

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  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 18, 2016
    Quiz Created by
    Maria_owens
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