Chapter 3

Last update by Smcdonald1 on 09/18/2014
416268 People have viewed this Quiz
  • Share

Water is able to form hydrogen bonds because

A) oxygen has a valence of 2.

B) the water molecule is shaped like a tetrahedron.

C) the bonds that hold together the atoms in a water molecule are polar covalent bonds.

D)the oxygen atom in a water molecule has a weak positive charge.

E) each of the hydrogen atoms in a water molecule is weakly negative in charge.

Answer:
C) the bonds that hold together the atoms in a water molecule are polar covalent bonds.

View Chapter 3 as Flashcard Deck

Related Quiz Content
  • feldman2009
    Answered in Chapter 3

    What gives rise to the cohesiveness ofwater molecules?

    A) hydrophobic interactions

    B) nonpolar covalent bonds

    C) ionic bonds

    D) hydrogen bonds

    E) both A and C



    D) hydrogen bonds
  • feldman2009
    Answered in Chapter 3

    Which of the following effects is produced by the high surface tension of water?

    A) Lakes don't freeze solid in winter, despite low temperatures.

    B) A water strider can walk across the surface of a small pond.

    C) Organisms resist temperature changes, although they give off heat due to chemical reactions.

    D) Water can act as a solvent.

    E) The pH of water remains exactly neutral.

    B) A water strider can walk across the surface of a small pond.
  • feldman2009
    Answered in Chapter 3

    Which of the following takes place as an ice cube cools a drink?

    A) Molecular collisions in the drink increase.

    B)Kinetic energy in the drink decreases.

    C) A calorie of heat energy is transferred from the ice to the water of the drink.

    D) The specific heat of the water in the drink decreases.

    E) Evaporation of the water in the drink increases.



    B)Kinetic energy in the drink decreases.
  • feldman2009
    Answered in Chapter 3

    Which of the following statements correctly defines a kilocalorie?

    A) the amount of heat required to raise the temperature of 1 g of water by 1°F

    B) the amount of heat required to raise the temperature of 1g of water by 1°C

    C) the amount of heat required to raise the temperature of 1 kg of water by 1°F

    D) the amount of heat required to raise the temperature of 1 kg of water by 1°C

    E) the amount of heat required to raise the temperature of 1,000 g of waterby 1°F

    D) the amount of heat required to raise the temperature of 1 kg of water by 1°C
  • feldman2009
    Answered in Chapter 3

    The nutritional information on a cereal box shows that one serving of a dry cereal has 200

    kilocalories. If one were to burn one serving of the cereal, the amount of heat givenoff would be

    sufficient to raise the temperature of 20 kg of water how many degrees Celsius?

    A) 0.2°C

    B) 1.0°C

    C) 2.0°C

    D) 10.0°C

    E) 20.0°C



    E) 20.0°C

    raise 1 kg by 1°C .
  • feldman2009
    Answered in Chapter 3

    Water's high specific heat is mainly a consequence of the

    A) small size of the water molecules.

    B) high specific heat of oxygen and hydrogen atoms.

    C) absorption and release of heat when hydrogen bonds break and form.

    D) fact that water is a poor heat conductor.

    E) inability of water to dissipate heat into dry air.

    C) absorption and release of heat when hydrogen bonds break and form.
  • feldman2009
    Answered in Chapter 3

    Which type of bond must be broken for water to vaporize?

    A) ionic bonds

    B) nonpolar covalent bonds

    C) polar covalent bonds

    D) hydrogen bonds

    E) covalent bonds



    D) hydrogen bonds
  • feldman2009
    Answered in Chapter 3

    Temperature usually increases when water condenses. Which behavior of water is most directly responsible for this phenomenon?

    A) the change in density when it condenses to form a liquid or solid

    B) reactions with other atmospheric compounds

    C) the release of heat by the formation of hydrogen bonds

    D) the release of heat by the breaking of hydrogen bonds

    E) the high surface tension of water



    C) the release of heat by the formation of hydrogen bonds
  • feldman2009
    Answered in Chapter 3

    At what temperature is water at its densest?

    A) 0°C

    B) 4°C

    C) 32°C

    D) 100°C

    E) 212°C



    B) 4°C
  • feldman2009
    Answered in Chapter 3

    Why does ice float in liquid water?

    A) The liquid water molecules have more kinetic energy and thus support the ice.

    B) The ionic bonds between the molecules in ice prevent the ice from sinking.

    C) Ice always has air bubbles that keep it afloat.

    D) Hydrogen bonds stabilize and keep the molecules of ice farther apart than the watermolecules of liquid water.

    E) The crystalline lattice of ice causes it to be denser than liquid water.

    D) Hydrogen bonds stabilize and keep the molecules of ice farther apartthan the watermolecules of liquid water.
  • feldman2009
    Answered in Chapter 3

    Hydrophobic substances such as vegetable oil are

    A) nonpolar substances that repel water molecules.

    B) nonpolar substances that have an attraction for water molecules.

    C) polar substances that repel water molecules.

    D) polar substances that have an affinity for water.

    E) charged molecules that hydrogen-bond with water molecules.



    A) nonpolar substances that repel water molecules.