Chapter 13 Quiz

Which of the following does not increase the rate at which a solid dissolves in water?

• raising the temperature
• stirring
• using large pieces of the solid
• crushing the solid

Effervescence is the _______________

• dissolving of a gas in a liquid
• escape of a gas from a container of gas
• escape of a solid from a solid-liquid solution
• escape of a gas from a gas-liquid solution

Which of the following is a heterogeneous mixture?

• water
• a sugar-water solution
• whole-wheat bread
• sugar

Which mixture contains visible particles that settle out unless the mixture is stirred?

• a colloid
• a homogeneous mixture
• a solution
• a suspension

Colloids

• can be separated by filtering
• settle out when allowed to stand
• scatter light
• are homogeneous

Liquid solutes and solvents that are not soluble in each other are

• homogeneous
• heterogeneous
• solutions
• colloids

When a solute dissolves and re-crystallizes at the same rate, the solution is at 

• equilibrium
• suspension
• colloid
• particle

Mixtures are classified according to their ________ size

• particle
• solution
• molarity
• molality

Which of the following has components that are obviously different?

• homogeneous mixture
• solution
• colloid
• heterogeneous mixture

Oxygen in nitrogen is an example of which solute-solvent combination?

• gas-liquid
• liquid-gas
• gas-solid
• gas-gas