Phases and Phase Changes Quiz
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Questions and Answers

In a homogenous mixture, how many phases are present?

  • Two phases
  • Three phases
  • Four phases
  • One phase (correct)

    • What is the critical temperature (Tc) defined as in a phase diagram?

  • Temperature at which the solid and liquid phases coexist in equilibrium
  • Temperature at which the substance forms a homogeneous mixture
  • Temperature at which the substance undergoes sublimation
  • Temperature above which the vapor or gas cannot be liquefied, no matter the applied pressure (correct)

    • What does the critical point of a substance represent on a phase diagram?

  • The point at which the substance forms a homogeneous mixture
  • The point at which solid and liquid phases coexist in equilibrium
  • The point at which the substance undergoes sublimation
  • The point at which critical temperature and critical pressure meet (correct)

    • What is the critical pressure (Pc) defined as in a phase diagram?

    <p>The minimum pressure required to liquefy a gas at the critical temperature</p> Signup and view all the answers

    What does the dotted green line on the phase diagram represent?

    <p>Anomalous behavior of water</p> Signup and view all the answers

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