Sunday, June 20, 2010


Solutions are homogenous mixtures of two or more substances. As a basis for understanding
this concept:
a. Students know the definitions of solute and solvent.
b. Students know how to describe the dissolving process at the molecular level by
using the concept of random molecular motion.
c. Students know temperature, pressure, and surface area affect the dissolving process.
d. Students know how to calculate the concentration of a solute in terms of grams per
liter, molarity, parts per million, and percent composition.
e.* Students know the relationship between the molality of a solute in a solution and
the solution’s depressed freezing point or elevated boiling point.
f.* Students know how molecules in a solution are separated or purified by the methods
of chromatography and distillation.

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