Heat Transfer Basics
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Questions and Answers

What happens to the speed of atoms/molecules when a substance is heated?

  • The speed of the atoms/molecules remains the same.
  • The atoms/molecules themselves expand or shrink.
  • The speed of the atoms/molecules decreases.
  • The speed of the atoms/molecules increases. (correct)

    • What is the relationship between the speed of atoms/molecules and temperature?

  • Temperature is not related to the speed of atoms/molecules.
  • Temperature is inversely proportional to the speed of atoms/molecules.
  • Temperature is a measurement of the volume of the substance.
  • Temperature is directly proportional to the speed of atoms/molecules. (correct)

    • What happens to the volume of a substance when it is cooled?

  • The volume of the substance remains the same.
  • The atoms/molecules themselves expand or shrink.
  • The volume of the substance decreases. (correct)
  • The volume of the substance increases.

    • What is the relationship between energy transfer and cooling/heating a substance?

    <p>Heating a substance means energy is transferred to it, while cooling means energy is transferred from it.</p> Signup and view all the answers

    What happens to the frequency and strength of collisions between atoms/molecules when a substance is warmed?

    <p>The collisions become more frequent and stronger.</p> Signup and view all the answers

    What effect does a higher temperature have on the speed of particles?

    <p>Increases the speed of particles</p> Signup and view all the answers

    How does lower pressure affect the movement of particles in a gas mixture?

    <p>Leads to more rapid particle diffusion</p> Signup and view all the answers

    What role does viscosity play in the diffusion of particles through a medium?

    <p>Slows down particle diffusion</p> Signup and view all the answers

    What is the primary function of Gas Chromatography-Olfactometry (GC-O) in odor detection?

    <p>Quantify and identify odor components through analysis</p> Signup and view all the answers

    How do Electronic Noses (E-Noses) detect odor components in gaseous samples?

    <p>By utilizing sensors that respond to specific gaseous particles</p> Signup and view all the answers

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