8.2 Solubility and Concentration

What terms are used to describe solutions with different amounts of solute?

• undissolved

• unsaturated

• saturated

• unsoluted

• supersaturated

List the three factors that affect solubility.

• pressure

• density

• polarity

• volume

• temperature

What are three ways to measure the concentration of a solution?

• concentration

• percent by volume

• percent by mass

• percent by density

• molarity

What is the effect of increased pressure on the solubility of a gas?

• It increases the solubility of the gas.

• It does nothing to a gas's solubility.

• It decreases the solubility of the gas.

• You need to know the temperature before you can tell the effect of pressure on a gas's solubility.

How does increasing the temperature of a solvent affect the solubility of a gas?

• It will increase the solubility.

• It has no effect on the solubility.

• It will decrease the solubility.

• You need to know the pressure before you can tell the effect of temperature.

Why does crushing a solute increase the rate of solution?

• It increases the temperature.

• It increases the pressure.

• It decreases the density.

• It increases the surface area.

A solution that contains less solute than it can hold at a given temperature is a(n):

• saturated solution.

• unsaturated solution.

• supersaturated solution.

• undissolved solution.

A solution that contains as much solute as it can hold at a given temperature is a(n):

• saturated solution

• unsaturated solution

• undissolved solution

• supersaturated solution

A solution that contains more solute than it can hold at a given temperature is a(n):

• saturated solution

• undissolved solution

• unsaturated solution

• supersaturated solution

Why doesn't oil dissolve in water?

• Oil is polar and water is nonpolar and are not attracted to each other.

• Both are polar substances and "likes" repel.

• Oil is nonpolar and water is polar and are therefore not attracted to each other.

• Both are nonpolar substances and only "opposites" attract.