PMT Education: States of Matter and Latent Heat
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PMT Education: States of Matter and Latent Heat

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Questions and Answers

Which state of matter has particles that are spread apart with high kinetic energies?

  • Liquid
  • Plasma
  • Solid
  • Gas (correct)

    • What is the energy required for a substance to change state called?

  • Potential Energy
  • Kinetic Energy
  • Activation Energy
  • Latent Heat (correct)

    • Which component of an atom is located in the nucleus and has a neutral charge?

  • Electrons
  • Protons
  • Positrons
  • Neutrons (correct)

    • What type of changes are changes in physical properties that can be reversed?

    <p>Physical Changes</p> Signup and view all the answers

    In which state of matter do particles have intermolecular forces acting between them?

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

    What is the unit of pressure equal to a force of one Newton acting perpendicular to an area of one meter squared?

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

    What is temperature a measure of?

    <p>The average kinetic energy of the particles in a substance</p> Signup and view all the answers

    Which model of the atom is sometimes referred to as the plum-pudding model?

    <p>Thomson Model</p> Signup and view all the answers

    What is Upthrust in a fluid equal to?

    <p>The weight of the fluid displaced by the object</p> Signup and view all the answers

    What is weight defined as in physics?

    <p>The force acting on an object due to gravity</p> Signup and view all the answers

    What will happen to the particles' kinetic energies when the temperature of a substance increases?

    <p>They will increase</p> Signup and view all the answers

    Which term refers to the amount of energy required to change the state of one kilogram of a substance from solid to liquid, held at constant temperature?

    <p>Specific Latent Heat of Fusion</p> Signup and view all the answers

    In which state of matter do particles have strong intermolecular forces and are tightly packed together?

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

    What does the Rutherford Model describe about the atom?

    <p>Atom as mostly empty space</p> Signup and view all the answers

    When will an object sink in a liquid according to the text?

    <p>When the volume of liquid displaced has lower weight</p> Signup and view all the answers

    Which term describes the direct change from a solid state to a vapor state without passing through the liquid phase?

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

    What is the name for the energy needed to increase the temperature of one kilogram of a substance by one degree Celsius?

    <p>Specific Heat Capacity</p> Signup and view all the answers

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