Chemistry of the Water

Referred to as saline water

• seawater

• freshwater

• ocean

• lake

Contains 97.2%

• ocean

• lake

• glacier

• ice caps

The mass in grams of dry salts present in 1 kg of seawater

• salinity

• toxicity

• dissolved oxygen

• pH

Greatest ionic constituent found in seawater

• F^-

• SO₄^2-

• Na⁺

• Cl^-

Least ionic constituent found in seawater

• F^-

• SO₄^2-

• Na⁺

• Cl^-

The temperature_________as you go deeper in the ocean.

• increases

• decreases

• stationery

• becomes 0⁰C

The density_________as you go down to 1000m deep in the ocean.

• increases

• decreases

• stationery

• becomes 0⁰C

The region between 200 m and 1000 m deep

• twilight zone

• buffer zone

• anaerobic region

• aerobic region

The following substances are obtained in commercially important amounts in seawater except________

• sodium chloride

• bromine

• magnesium

• calcium fluoride

Ocean's pH

• 8.0-8.3

• 7.0-7.3

• 6.0-6.03

• 9.0-9.3