Question

Two teaspoons of salt are added to a glass of water which is then stirred until no more salt grains can be seen. Two more teaspoons are added and stirring is continued, but the salt grains are still evident in the glass and settle to the bottom. After the addition of the last two teaspoons of salt the solution is

nonpolar

polar

saturated

unsaturated

Answer 1

True

REASON: All gas mixtures are homogeneous, hence all gas mixtures are solutions. Air is an example. Air is only one phase--the gas phase. All the molecules, whatever the source, behave as gas molecules. The molecules themselves may have come from gaseous substances, liquid substances, or solid substances. Whatever the source of the constituents, this gaseous solution–air–is in a single, homogeneous phase. As with other solutions, the constituents of air may be separated by phase changes.

Answer 2

The Solution Is Saturated.