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BIOLOGY101 g
TESTBANK
g g
Water and Life
g g
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1. In a single molecule of water, two hydrogen atoms
g g g g g g g g
g arebonded to a single oxygen atom by? g g g g g g
A. hydrogen bonds. g
B. nonpolar covalent bonds. g g
C. polar covalent bonds. g g
D. ionic bonds. g
E. van der Waals interactions.
g g g
2. In a group of water molecules, hydrogen bonds
g g g g g g g
g formbetween?
A. the oxygen atoms in different water molecules
g g g g g g
B. Two hydrogen atoms in different water molecules
g g g g g g
C. the oxygen atom in one water molecule and
g g g g g g g
ahydrogen atom in another water molecule
g g g g g g
D. the hydrogen atoms in a single water molecule
g g g g g g g
E. None of the listed responses is Correct
g g g g g g
3. Life on Earth is dependent on all the properties of
g g g g g g g g g
gwatertas well as the abundance of water. Which
g g g g g g g
gproperty of water is probably most important for the
g g g g g g g g
gfunctioning of organisms at the molecular level? g g g g g g
A. high specific heat g g
B. cohesion and high surface tension g g g g
C. versatility as a solvent g g g
D. expansion upon freezing g g
E. high heat of vaporizationg g g
4. Some substances, such as oil and gasoline, will
g g g g g g g
gnottdissolve in water because? g g g
A. oil and gasoline are organic compounds,
g g g g g
B. their molecules have no charges or partial charges
g g g g g g g
towhich water molecules can adhere
g g g g g
C. their electrons are so stable that they do not
g g g g g g g g
exchangeatoms with water molecules
g g g g
D. they do not ionize g g g
E. their molecules are so large
g g g g
7
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5. The partial charges on a water molecule occur
g g g g g g g
gbecauseof?
A. widespread ionization g
B. the unequal sharing of electrons between the
g g g g g g
ghydrogen and the oxygen atoms of a water g g g g g g g
gmolecule
C. the high electronegativity of hydrogen
g g g g
D. covalent bonding g
E. the achievement of a stable configuration by one atom of
g g g g g g g g g
g abond but not by the other partner g g g g g g
6. Water molecules have g than molecules of g g g
gsimilartsize, such as ammonia and methane, g g g g g
greflecting its capacity to absorb large amounts of
g g g g g g g
gheat.
A. less surface tension g g
B. a higher boiling point
g g g
C. a lower capacity for forming
g g g g
D. lower specific heat hydrogen bonds
g g g g
E. a lower melting point
g g g
7. Most of water's unique features (for example, its
g g g g g g g
gversatility as a solvent, ability to moderate g g g g g g
gtemperature,and cohesive behavior) result from the g g g g g
gfact that?g
A. hydrogen is the only element without any neutrons. g g g g g g g
B. oxygen attracts electrons more than hydrogen does. g g g g g g
C. oxygen has only one stable isotope, but hydrogen
g g g g g g g
ghasthree.
D. oxygen has two unfilled electron shells. g g g g g
E. More than one of the above is Correct.
g g g g g g g
8
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8. The slight negative charge at one end of one water
g g g g g g g g g
gmolecule is attracted to the slight positive charge of
g g g g g g g g
ganother water molecule. What is this attraction called?
g g g g g g g
A. a covalent bond
g g
B. a hydrogen bond
g g
C. an ionic bond
g g
D. a hydrophilic bond
g g
E. a van der Waals interaction
g g g g
9. Sulfur is in the same column of the periodic table
g g g g g g g g g
gasoxygen, but has electronegativity similar to g g g g g
gcarbon. Compared to water molecules, molecules of
g g g g g g
gH2S?
A. will ionize more readily.
g g g
B. will have greater cohesion to other molecules of H2S.
g g g g g g g g
C. will have a greater tendency to form hydrogen bonds
g g g g g g g g
gwitheach other. g
D. will have a higher capacity to absorb heat for the
g g g g g g g g g
gsamechange in temperature. g g
E. will not form hydrogen bonds with each other.
g g g g g g g
10. Water molecules are able to form hydrogen bonds with?
g g g g g g g g
A. compounds that have polar covalent bonds. g g g g g
B. oils.
C. oxygen gas (O2. molecules. g g g
D. chloride ions. g
E. any compound that is not soluble in water.
g g g g g g g
9
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BIOLOGY101 g
TESTBANK
g g
Water and Life
g g
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Distribution of this document is illegal extra per year?
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1. In a single molecule of water, two hydrogen atoms
g g g g g g g g
g arebonded to a single oxygen atom by? g g g g g g
A. hydrogen bonds. g
B. nonpolar covalent bonds. g g
C. polar covalent bonds. g g
D. ionic bonds. g
E. van der Waals interactions.
g g g
2. In a group of water molecules, hydrogen bonds
g g g g g g g
g formbetween?
A. the oxygen atoms in different water molecules
g g g g g g
B. Two hydrogen atoms in different water molecules
g g g g g g
C. the oxygen atom in one water molecule and
g g g g g g g
ahydrogen atom in another water molecule
g g g g g g
D. the hydrogen atoms in a single water molecule
g g g g g g g
E. None of the listed responses is Correct
g g g g g g
3. Life on Earth is dependent on all the properties of
g g g g g g g g g
gwatertas well as the abundance of water. Which
g g g g g g g
gproperty of water is probably most important for the
g g g g g g g g
gfunctioning of organisms at the molecular level? g g g g g g
A. high specific heat g g
B. cohesion and high surface tension g g g g
C. versatility as a solvent g g g
D. expansion upon freezing g g
E. high heat of vaporizationg g g
4. Some substances, such as oil and gasoline, will
g g g g g g g
gnottdissolve in water because? g g g
A. oil and gasoline are organic compounds,
g g g g g
B. their molecules have no charges or partial charges
g g g g g g g
towhich water molecules can adhere
g g g g g
C. their electrons are so stable that they do not
g g g g g g g g
exchangeatoms with water molecules
g g g g
D. they do not ionize g g g
E. their molecules are so large
g g g g
7
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5. The partial charges on a water molecule occur
g g g g g g g
gbecauseof?
A. widespread ionization g
B. the unequal sharing of electrons between the
g g g g g g
ghydrogen and the oxygen atoms of a water g g g g g g g
gmolecule
C. the high electronegativity of hydrogen
g g g g
D. covalent bonding g
E. the achievement of a stable configuration by one atom of
g g g g g g g g g
g abond but not by the other partner g g g g g g
6. Water molecules have g than molecules of g g g
gsimilartsize, such as ammonia and methane, g g g g g
greflecting its capacity to absorb large amounts of
g g g g g g g
gheat.
A. less surface tension g g
B. a higher boiling point
g g g
C. a lower capacity for forming
g g g g
D. lower specific heat hydrogen bonds
g g g g
E. a lower melting point
g g g
7. Most of water's unique features (for example, its
g g g g g g g
gversatility as a solvent, ability to moderate g g g g g g
gtemperature,and cohesive behavior) result from the g g g g g
gfact that?g
A. hydrogen is the only element without any neutrons. g g g g g g g
B. oxygen attracts electrons more than hydrogen does. g g g g g g
C. oxygen has only one stable isotope, but hydrogen
g g g g g g g
ghasthree.
D. oxygen has two unfilled electron shells. g g g g g
E. More than one of the above is Correct.
g g g g g g g
8
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8. The slight negative charge at one end of one water
g g g g g g g g g
gmolecule is attracted to the slight positive charge of
g g g g g g g g
ganother water molecule. What is this attraction called?
g g g g g g g
A. a covalent bond
g g
B. a hydrogen bond
g g
C. an ionic bond
g g
D. a hydrophilic bond
g g
E. a van der Waals interaction
g g g g
9. Sulfur is in the same column of the periodic table
g g g g g g g g g
gasoxygen, but has electronegativity similar to g g g g g
gcarbon. Compared to water molecules, molecules of
g g g g g g
gH2S?
A. will ionize more readily.
g g g
B. will have greater cohesion to other molecules of H2S.
g g g g g g g g
C. will have a greater tendency to form hydrogen bonds
g g g g g g g g
gwitheach other. g
D. will have a higher capacity to absorb heat for the
g g g g g g g g g
gsamechange in temperature. g g
E. will not form hydrogen bonds with each other.
g g g g g g g
10. Water molecules are able to form hydrogen bonds with?
g g g g g g g g
A. compounds that have polar covalent bonds. g g g g g
B. oils.
C. oxygen gas (O2. molecules. g g g
D. chloride ions. g
E. any compound that is not soluble in water.
g g g g g g g
9
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