AnswersAFC Chemistry B S3Properties of Water

Properties of Water Answers

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1
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Which statement would be true about a water molecule if it had a linear shape?

A
It would contain ionic bonds.
B
It would have improved special properties.
C
It would easily bond with other water molecules.
D
It would be a nonpolar molecule.
2
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Water can resist a greater external force than ethanol can. Which statement best describes this difference?

A
Water has less capillary action than ethanol.
B
Water has greater capillary action than ethanol.
C
Water has lower surface tension than ethanol.
D
Water has greater surface tension than ethanol.
3

Which best explains why blood and the cytoplasm of cells are mainly composed of liquid water?

A
Water is a common substance and is readily available.
B
Water is an important transport and reaction medium.
C
Water prevents biological reactions from occurring readily.
D
Water prevents turgor pressure from making the cells too rigid.
4

Which best explains why water is able to “stick” to the side of glass?

A
Strong adhesive forces exist between different water molecules.
B
Strong cohesive forces exist between different water molecules.
C
Strong adhesive forces exist between glass and the water molecules.
D
Strong cohesive forces exist between glass and the water molecules.
5

Which best explains why an iceberg floats?

A
Water expands and becomes denser when it freezes.
B
Water contracts and becomes denser when it freezes.
C
Water expands and becomes less dense when it freezes.
D
Water contracts and becomes less dense when it freezes.
6

Which best explains the high surface tension of water?

A
its high density
B
its ion-dipole interactions
C
its adhesive interactions
D
its hydrogen bonding interactions
7

Which best explains why water has a high specific heat?

A
Hydrogen bonds decrease the amount of energy that is required for the temperature to change.
B
Hydrogen bonds increase the amount of energy that is required for the temperature to change.
C
Ion-dipole interactions increase the amount of energy that is required for the temperature to change.
D
Ion-dipole interactions decrease the amount of energy that is required for the temperature to change.
8

Which role of water is significant for most living things in a biological system?

A
It prevents many life processes from occurring.
B
It slows down the transportation of nutrients.
C
It provides temperature regulation.
D
It does not freeze in cells at very cold temperatures.
9

Which is the best example of water regulating an organism’s body temperature?

A
a jogger sweating after a run
B
a fish passing water over its gills
C
a deer taking a drink from a stream
D
a leaf using water for photosynthesis
10

Which statement best explains water’s ability to dissolve covalent compounds?

A
Water can dissolve polar covalent compounds through dipole-dipole interactions.
B
Water can dissolve nonpolar covalent compounds through hydrogen-bonding interactions.
C
Water can dissolve polar covalent compounds through ion-dipole interactions.
D
Water can dissolve nonpolar covalent compounds through dipole-dipole interactions.

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