Test On Solutions

Using the graph above, which compound would dissolve the fastest at 20° C, KCl, NaCl, KNO₃, or KClO₃?

• KCl

• NaCl

• KNO₃

• KClO₃

A solution that has the maximum amount of solute dissolved in the solvent is called __________________.

• saturated

• supersaturated

• unsaturated

• suspension

A solution that has less than the maximum amount of solute dissolved in the solvent is called __________________.

• saturated

• supersaturated

• unsaturated

• suspension

Using the graph above, how many grams of KCl can be dissolved in 300g of water at 40° C?

• 30g

• 50g

• 120g

• 40g

Dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% and carbon dioxide. What is the solvent in the solution we call air?

• nitrogen

• oxygen

• argon

• carbon dioxide

What is the name for a substance that dissolves in water but does not form ions or conduct an electric current?

• electrolyte

• nonelectrolyte

• saturated

• insoluble

When sugar is dissolved in water, the ______ is the solute.

• sugar

• water

The dissolving medium in a solution is called ... 

• colloid
• solution
• solute
• solvent

How does a solution become supersaturated?

• Vigorous stirring to dissolve more solute than usual.

• Heat the solution to increase the solute then let it cool.

• Add more solvent to lower the concentration.

• Keep pouring solute in the solvent until it goes in.

Which substance is MOST soluble at 0 ºC?

• KI
• NaNO₃
• NaCl
• Ce₂(SO₄)₃