Quiz 1: Mixtures and Solutions

What is a mixture?

• A single substance with uniform properties

• A solution with a high concentration of solute

• A combination of two or more substances that are together but not chemically combined

• A combination of two or more substances that are chemically combined

What type of mixture has distinct components that can easily be seen?

• Solution

• Colloid

• Heterogeneous mixture

• Homogeneous mixture

Which of the following is an example of a homogeneous mixture?

• Sand and salt

• Fruit salad

• Oil and vinegar dressing

• Saltwater

What is a colloid?

• A solid that dissolves in a liquid

• A solution with a high concentration of solute

• A mixture containing small, undissolved particles that do not settle

• A mixture with large particles that settle out

What happens to a suspension when left undisturbed?

• It separates into its constituent parts

• It becomes a colloid

• It becomes a solution

• It evaporates completely

What is the solvent in a solution?

• The solid component of the solution

• The mixture of solutes

• The part of the solution present in the largest amount

• The substance that is dissolved

What effect does adding solute have on the boiling point of a solution?

• It lowers the boiling point

• It raises the boiling point

• It has no effect

• It makes the solution evaporate faster

What is solubility?

• The temperature at which a solution freezes

• The measure of how much solute will dissolve in a solvent

• The ability of a solute to evaporate

• The amount of solvent in a solution

How does temperature affect the solubility of most solids?

• It makes solids dissolve faster in cold water

• It increases solubility

• It has no effect

• It decreases solubility

What happens to the solubility of gases as temperature increases?

• It remains the same

• It becomes saturated

• It increases

• It decreases