Chemistry of Ocean Water

Corals, mollusks, and crustaceans need what to make their skeletons, shells, and structures?

• Calcium carbonate

• Sodium chloride

• Carbon dioxide

• Nitrogen gas

Which of these processes causes salinity to increase?

• Precipitation

• Ice melt

• evaporation

• Deep water formation

What major gas/gases are absorbed by the ocean?

• oxygen and nitrogen

• carbon dioxide and hydrogen

• hydrogen and oxygen

• carbon dioxide

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

What is the average salinity of the ocean?

• 3 parts per thousand

• 3.5 percent

• 35 percent

• 35 parts per thousand

Diffusion is:

• Carbon dioxide from the atmosphere dissolving into the ocean

• animals releasing carbon dioxide into the seawater

• the deposition of carbon dioxide into the sediment

• the transferring of carbon dioxide from the atmosphere to the sediment

Which molecule has opposite electric charges at opposite ends?

• Cohesion

• Polar molecule

• Hydrogen bond

• Solution

Samuel, Benjamin, and Daniel went on a scuba diving trip. They noticed that one color of light disappeared first as they descended. Which color of light is absorbed closest to the ocean surface and is not visible below 10 meters?

• Blue

• Red

• Green

• Yellow

Where do most of the ocean salts come from?

• Rainfall

• Decaying organisms

• Hydrothermal vents

• Lakes

What property of water allows for water to act as a temperature regulator for the world?

• Cohesive Behavior

• Expansion Upon Freezing

• High Specific Heat

• Universal Solvent

Water is a universal solvent because it...

• It can be found anywhere

• It freezes when it gets cold

• floats when frozen

• Dissolves most substances