Kinetic Molecular Theory (KMT) Postulates Quiz
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Questions and Answers

According to Kinetic Molecular Theory, what is the relationship between kinetic energy and temperature?

  • Kinetic energy is unrelated to temperature.
  • Kinetic energy remains constant regardless of temperature.
  • Kinetic energy increases as temperature increases. (correct)
  • Kinetic energy decreases as temperature increases.
  • In which state of matter are molecules held together by attractive forces and have very little empty space?

  • Plasma
  • Gas
  • Solid
  • Liquid (correct)
  • Which state of matter has molecules that are held rigidly in position?

  • Liquid
  • Plasma
  • Gas
  • Solid (correct)
  • What happens to the distance between molecules when transitioning from a liquid to a gas state?

    <p>The distance increases.</p> Signup and view all the answers

    Which phase of matter is harder to compress than gases?

    <p>Liquid</p> Signup and view all the answers

    What type of order characterizes many solids?

    <p>Long-range order</p> Signup and view all the answers

    Which state of matter flows, can be poured, and assumes the shape of its container?

    <p>Liquid</p> Signup and view all the answers

    What type of forces are responsible for the attractive interactions between polar molecules?

    <p>Dipole-dipole forces</p> Signup and view all the answers

    Which type of force is significant only when atoms are close together?

    <p>London dispersion forces</p> Signup and view all the answers

    What type of bond involves interactions between hydrogen and an electronegative atom like O, N, or F?

    <p>Hydrogen bond</p> Signup and view all the answers

    Which force involves electrostatic interactions between a fixed dipole in one molecule and an ion in another?

    <p>Ion-dipole forces</p> Signup and view all the answers

    Why are dipole-dipole forces stronger than London dispersion forces?

    <p>Because they have a permanent uneven distribution of electrons</p> Signup and view all the answers

    What causes London Dispersion Forces to occur between nonpolar molecules?

    <p>Permanent dipole moments induced by electron movement</p> Signup and view all the answers

    What factor influences the strength of dispersion forces in molecules?

    <p>Size and diffuseness of the electron cloud</p> Signup and view all the answers

    Which molecule would likely have stronger London Dispersion Forces with another molecule?

    <p>Iodine (I2)</p> Signup and view all the answers

    How does an increase in the number of atoms in a molecule affect its intermolecular forces?

    <p>Increases the strength of dispersion forces</p> Signup and view all the answers

    What property of molecules determines their polarizability?

    <p>Ease with which electron distribution can be distorted</p> Signup and view all the answers

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