GHF: Unit 4: Lesson 1 Water Properties

Multiple Choice

Which of the following best describes the structure of a water molecule?

• Two hydrogen atoms bonded to one oxygen atom at an angle

• Three hydrogen atoms bonded to one oxygen atom in a straight line

• One hydrogen atom bonded to two oxygen atoms in a triangle

• Two oxygen atoms bonded to one hydrogen atom at an angle

Multiple Choice

Which property of water allows it to stick to other materials?

• Cohesion

• Adhesion

• Surface tension

• Polarity

Multiple Choice

Which of the following statements about water's heat capacity is correct?

• Water's heat capacity is low, so it heats up quickly.

• Water can absorb a lot of heat with only a small change in temperature.

• Hydrogen bonds in water do not require energy to break.

• Water's heat capacity is the same as all other liquids.

Multiple Choice

Select all properties of water that are influenced by hydrogen bonding.

• Cohesion

• High heat capacity

• Density of ice

• All of the above

Multiple Choice

What percentage of sea water is pure water?

• 96.5%

• 55%

• 30.6%

• 3.5%

Multiple Choice

Which of the following factors impact ocean salinity?

• Depth

• Latitude

• Runoff

• All of the above

Multiple Choice

As the salinity of seawater increases, what happens to its density?

• Density increases

• Density decreases

• Density stays the same

• Density fluctuates unpredictably

Multiple Choice

Which of the following statements best explains why an excess of hydrogen ions (H+) makes a solution acidic?

• Hydrogen ions (H+) increase the pH of a solution.

• Hydrogen ions (H+) decrease the pH of a solution.

• Hydrogen ions (H+) make the solution neutral.

• Hydrogen ions (H+) have no effect on pH.

Multiple Choice

What is the primary function of the carbonate buffering system in the ocean?

• To regulate the pH of ocean water

• To increase the amount of carbon dioxide in the ocean

• To remove all hydrogen ions from the water

• To convert oxygen into carbon dioxide