Solutions Review

What makes water molecules polar?

• The oxygen end is negatively charged and the hydrogen end is positively charged.

• The hydrogen bonds are weak and neutral.

• The oxygen end is positively charged and the hydrogen end is negatively charged.

Why is ice less dense than liquid water?

• The molecules of ice are further apart than the molecules of water.

• The molecules of water have a lower energy level than that of ice.

• The molecules of water are farther apart than the molecules in ice.

• Liquid water has fewer chemical impurities than ice has.

The attraction between water molecules that creates surface tension.

• Cohesion

• Adhesion

• Miscibility

• Immiscibility

Oil and water do not mix well; it would be correct to say that they are ---

• Cohesiive

• Adhesive

• Miscibile

• Immiscible

Which of the following solution is likely to produce crystals if disturbed?

• an unsaturated solution

• saturated solution

• a supersaturated solution

• a concentrated solution

In the expression “like dissolves like,” the word “like” refers to similarity in molecular

• mass.

• energy.

• size.

• polarity.

A substance that is NOT soluble in a polar solvent is probably

• nonpolar.

• hydrogen bonded.

• polar.

• ionic.

substance that dissolves

• solvent
• solution
• solute
• unsaturated

substance that dissolves the solute

• solution
• solvent
• saturation

Water and oil are ____.

• Miscible
• Polar
• Nonpolar
• Immiscible