Exam 5: The Chemistry of Seawater

When the salinity of a seawater sample changes, the ratio of the major salt ions does not change.

The salinity of surface waters in the oceans ________.

The average salinity of the oceans is about ________ parts per thousand (‰).

The concentration of carbon dioxide in surface water is low, whereas the concentration of oxygen is high because of the ________.

The rule of constancy of composition of sea salts for open-ocean water specifies that regardless of the salinity, the major ions always appear in the same ratio to each other.

The saturation value of oxygen in seawater increases as the temperature increases.

A device used to separate fresh water from salt water using heat is called a(n) ________.

An ion with a negative charge is called a(n) ________.

The biological pump ________.

Sea surface salinity is a function of ________ and ________.

Salinity may be measured by checking the water's ________.

Which gas has the highest concentration throughout the entire ocean?

The major ionic constituents of sea salt are normally found to ________.

The pH of seawater is regulated by its ________.

Which latitudinal area tends to have the highest average surface salinity?

Which of the following is NOT a major dissolved constituent of seawater?

Sources of the oceans' salts are believed to include ________.

Nutrients and dissolved gases in seawater are considered conservative substances.

The process of adherence of ions and molecules onto a particle's surface is called ________.

Seawater percolating through the fractured crust along ridge systems acts to both remove salts from and add salts to seawater.