Conceptual Questions About Gases And Solutions

14 Questions | Total Attempts: 60

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Conceptual Questions About Gases And Solutions

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Questions and Answers
  • 1. 
    Why are two nonpolar substances able to dissolve in each other?
    • A. 

      There is no attractive force between them

    • B. 

      Nonpolar substances cannot dissolve in each other.

    • C. 

      They combine to produce a plar substance

    • D. 

      There is no repulsive force between them.

  • 2. 
    How does the surface tension of water compare with the surface tensions of most other liquids?
    • A. 

      It is higher.

    • B. 

      It is lower.

    • C. 

      It is about the same.

  • 3. 
    Which of the following is primarily responsible for holding water molecules together in the liquid state?
    • A. 

      Dispersion forces

    • B. 

      Polar covalent bonds

    • C. 

      Ionic bonds

    • D. 

      Hydrogen bonds

  • 4. 
    What causes water's low vapor pressure?
    • A. 

      Covalent bonding

    • B. 

      Dispersion forces

    • C. 

      Hydrogen bonding

    • D. 

      Ionic attractions

  • 5. 
    Which of the following is NOT a result of water's high heat capacity?
    • A. 

      The temperature of water goes up rapidly as it absorbs solar energy.

    • B. 

      For the same increase in temperature, iron needs to absorb only about one-tenth as much energy as water.

    • C. 

      The temperatures of cities near large bodies of water are moderated.

    • D. 

      Water is an excellent medium for the storage of solar energy.

  • 6. 
    How does the boiling point of water compare with the boiling points of other molecules of similar size?
    • A. 

      It is higher.

    • B. 

      It is lower.

    • C. 

      It is about the same.

  • 7. 
    As a result of water's high heat of vaporization, differences in temperature extremes on earth are ___________
    • A. 

      Less than they would otherwise be

    • B. 

      Greater than they would otherwise be

    • C. 

      There is no effect on temperature extremes.

  • 8. 
    Which of the following is most directly responsible for water's high heat of vaporization and high boiling point?
    • A. 

      Ionic attractions

    • B. 

      Dispersion forces

    • C. 

      Hydrogen-bonding

    • D. 

      Covalent bonding

  • 9. 
    Which of the following is responsible for the relatively high boiling point of ammonia?
    • A. 

      Polar covalent bonding

    • B. 

      Metallic bonding

    • C. 

      Hydrogen-bonding

    • D. 

      Ionic bonding

  • 10. 
    The condensation of steam is a(n) _________
    • A. 

      Electrolytic process

    • B. 

      Catalytic process

    • C. 

      Exothermic process

    • D. 

      Endothermic process

  • 11. 
    What energy change occurs when 100 g of ice melts to form 100 g of water at 0 degrees C?
    • A. 

      No energy change occurs

    • B. 

      8 kcal is absorbed by the ice.

    • C. 

      8 kcal is released by the ice.

  • 12. 
    The fact that ice is less dense than water is related to the fact that ____________
    • A. 

      The molecules of ice are held to each other by covalent bonding

    • B. 

      Ice has a molecular structure that is an open framework held together by hydrogen bonding

    • C. 

      Ice has a molecular structure in which water molecules are arranged randomly

    • D. 

      The molecular structure of ice is much less orderly than that of water

  • 13. 
    Which is more soluble in water?
    • A. 

      Ethane - a hydrocarbon

    • B. 

      Iso-propanol - an alcohol

  • 14. 
    Which is more soluble in gasoline (a hydrocarbon)
    • A. 

      Carbon tetrachloride

    • B. 

      Sodium chloride