Chemistry of Ocean Water

Ocean water contains dissolved _____________, measured as salinity.

• minerals

• sediments

• salines

• salt

What is the scientific name for salt?

• Sodium Acetate

• Sodium Chloride

• Chloride Sodium

• Hydroxide Sulfate

Which organisms are most affected by ocean acidification?

• Any organism that swims in the ocean.

• Benthic invertebrates that are attached to the ocean floor.

• Organisms at the top of the food chain.

• Organisms that produce shells.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

Ocean acidification means the pH of ocean water is ___.

• increasing

• decreasing

• remaining the same

Is NaCl (Sodium chloride) the only type of salt in the ocean?

• True

• False

Oxygen (O₂), Carbon dioxide (CO₂), and Nitrogen (N₂) are all _________________________ that are important to marine life.

• ions

• dissolved gases

• elements

• carbon compounds

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Carbon dioxide (CO₂) enters the ocean from the ____________.

• atmosphere

• photosynthesis of aquatic plants and algae

• melting of sea ice

• freezing of seawater

The density of seawater is affected by which two factors?

• Clarity and color

• Hydrogen ions and dissolved oxygen

• Transparency and turbidity

• Temperature and salinity

Ocean acidification occurs when too much __________ enters the ocean from the atmosphere.

• Calcium carbonate

• Carbon dioxide

• Sulfur dioxide

• Nitrogen gas

As a result of __________________________, there is not enough calcium carbonate available, which is needed by corals, crustaceans, and mollusks (such as snails).

• Chemosynthesis

• Photosynthesis

• Ocean Acidification

• Cellular Respiration

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4