AP Chemistry Unit 3: Mixtures and Solubility

Which of the following is a simple method to separate a mixture of solid components?

• Distillation

• Chromatography

• Physical picking

• Filtration

In distillation, what property is primarily used to separate components?

• Boiling point

• Color

• Density

• Magnetic properties

What is the main principle behind chromatography?

• Components are separated by boiling points

• Components pass through a column at different rates

• Components are separated by density

• Components are separated by color

Which type of solute is most likely to dissolve in water?

• Polar solute

• Metallic solute

• Gaseous solute

• Nonpolar solute

What is the rule of thumb for predicting solubility?

• Heavier dissolves faster

• Like dissolves like

• Opposites attract

• Lighter dissolves slower

How does temperature generally affect the solubility of solids in water?

• No effect

• Increases solubility

• Decreases solubility

• Varies randomly

What happens to the solubility of gases in liquids as temperature increases?

• Remains constant

• Varies randomly

• Decreases

• Increases

Why is it important to avoid warming aquarium water too much?

• It increases the solubility of oxygen

• It decreases the solubility of oxygen

• It increases the solubility of carbon dioxide

• It decreases the solubility of carbon dioxide

What effect does increasing pressure have on the solubility of gases in liquids?

• Varies randomly

• Increases solubility

• Decreases solubility

• No effect

What condition can occur if a diver ascends too quickly due to changes in pressure?

• Oxygen toxicity

• Decompression sickness

• Hypothermia

• The bends