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10 Cards in this Set

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Water molecules can be electrostatically attracted to other water molecules by weak attractions known as


1. covalent bonds


2. hydrogen bonds


3. ionic bonds


4. polar bonds

2. hydrogen bonds

The tendency of water molecules to stay close to each other as a result of hydrogen bonding causes all of the following EXCEPT


1. the surface tension that allows leaves to float on waterthe


2. movement of water up the vessels in a tree trunkthe


3. inability of ionic compounds to dissolve in waterthe


4. adhesion of water droplets to the side of a straw



3. the inability of ionic compounds to dissolve in water

What do water's properties of cohesion, surface tension, and adhesion have in common?


1. All have to do with the ionic bonds between water's atoms.


2. All result from the bonding within the hydrogen atom.


3. All are caused by the low electronegativity of the oxygen atom.


4. All are properties related to the attraction between water molecules.

4. All are properties related to the attraction between water molecules.

A lake's temperature remains fairly constant even as the air above it cools in the evening. This resistance to rapid temperature change is due to water's


1. buffering activity


2. high specific heat


3. high heat of vaporization


4. surface tension

2. high specific heat

Which of the following effects is a direct result of the high specific heat of water?


1. Lakes do not freeze solid in winter, even at below freezing temperatures.


2. Ice caps float on liquid water in the arctic because ice has a lower density than water.


3. Evaporation of sweat from the skin helps keep people from overheating.


4. Cells resist temperature changes, even with internal processes that are exothermic.



4. Cells resist temperature changes, even with internal processes that are exothermic.

Coastal climates are usually more moderate than inland climates. This is primarily due to which of water's characteristics?


1. high specific heat


2. low boiling point


3. low heat of fusion


4. high heat of vaporization

1. high specific heat

Which of the following biogeochemical cycles moves water through the atmosphere, surface, and crust of Earth?


1. carbon cycle


2. hydrologic cycle


3. nitrogen cycle


4. phosphorus cycle

2. hydrologic cycle

Nonpolar molecules that cluster away from water molecules when mixed into solution are


1. ionic


2. hydrophilic


3. hydrophobic


4.acidic

3. hydrophobic

Hydrocarbons are not very soluble in water because


1. the majority of their bonds are polar covalent, which repel water molecules


2. they contain ions, which make the entire molecule hydrophilic


3. they are less dense than liquid water, so they float on the surface


4. most of their bonds are nonpolar covalent, so they are not attracted to water

4. most of their bonds are nonpolar covalent, so they are not attracted to water

On the global scale, evaporation from oceans exceeds the amount of water that returns directly to the oceans through precipitation. In your own words, describe how water that is precipitated on land can eventually be cycled back into the oceans.

Water that is precipitated on land can form storages of water (lakes) or soak into the ground. From this places most water is carried into the oceans by rivers or by groundwater row. Water can also runoff the surface, seep out of the ground or fall rain over ocean.