Seawater Chemistry Quiz

What is the average percentage of salt in seawater?

• 1.0%

• 2.35%

• 99%

• 3.5%

Naturally occurring seawater is saline.

• TRUE

• FALSE

If freshwater is added to a region, what happens to seawater density and salinity?

• salinity decreases

• density decreases

• temperature decreases

• salinity increases

The salt in seawater comes from

• The breaking down of rocks

• Erosion

• Changing of the composition of rocks after chemical reactions

• All of the above

The density of seawater is

• Greater than

• The same as of

• Less than

• Half of

Tags

NGSS.MS-ESS2-4

If seawater gets very cold, what happens to its density?

• density remains the same

• density increases

• density decreases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Seawater varies in the degree of salinity throughout the world.

• TRUE

• FALSE

Water density increases with the:

• Decrease in temperature

• Increase in pressure

• Increase in water salinity

• All of the above

Tags

NGSS.MS-PS1-4

What is the term for table salt or sodium chloride when it naturally occurs as a mineral?

• saltite

• chlorite

(a)   is the amount of salt dissolved in water. density, salinity, or temperature