Ocean Water Chemistry

Where does the scientific explanation for the ocean's saltiness come from?

The total amount of dissolved salts in a sample of water is the ________ of that sample.

On average one kilogram of ocean water contains about of salt

• 25 grams

• 35 grams

• 45 grams

• 55 grams

The substance known as table salt, ______ ________, is the salt present in the greatest amount in ocean water.

Together, chloride and sodium make up almost percent of the ions dissolved in ocean water.

• 66%

• 76%

• 86%

• 96%

When sodium chloride dissolves in water, it separates into sodium and chloride particles called ____.

Tags

NGSS.MS-PS1-2

Near the oceans surface, these things add freshwater to the oceans surface, lowering the salinity.

• rain

• melting ice

• snow

Tags

NGSS.MS-ESS2-4

___________ increases salinity, since the salt is left behind as the water evaporates.

Tags

NGSS.MS-ESS2-4

Write the formula for density

Like temperatures on land, temperatures at the surface of the ocean vary with locations and the seasons.

• True

• False

Tags

NGSS.MS-ESS2-6