BJU Science 5 Fourth Edition Chapter 3 Review Part 3

Multiple Choice A

100

Nitrogen, N₂

(a) Molecule

(b) Compound

(a) Molecule

200

Sugar, C₁₂H₂₂O₁₁

(a) Molecule

(b) Compound

(b) Compound

300

Granite

(a) Mixture

(b) Solution

(a) Mixture

400

Syrup or Honey

(a) Heterogeneous

(b) Homogeneous

(b) Homogeneous

500

Salt Water

(a) Mixture

(b) Solution

(b) Solution

Multiple Choice B

100

Chlorine, Cl₂

(a) Molecule

(b) Compound

(a) Molecule

200

Milkshake

(a) Heterogeneous

(b) Homogeneous

(b) Homogeneous

300

Salad

(a) Heterogeneous

(b) Homogeneous

(a) Heterogeneous

400

Foam and Aerosol

(a) Mixture

(b) Solution

(a) Mixture

500

A salad dressing made with vinegar and oil.

(a) Mixture

(b) Solution

(a) Mixture

True/False A

100

In a mixture, all substances are evenly spread out.

(a) True

(b) False

(b) False

200

Water is the most common solvent, sometimes called the “universal solvent”.

(a) True

(b) False

(a) True

300

All solutions are formed from a solid dissolving in a liquid.

(a) True

(b) False

(b) False

400

Water boils at 100 ^oC (212 ^oF).

(a) True

(b) False

(a) True

500

Fourteen-carat gold jewelry is gold that has other metals added to it.

(a) True

(b) False

(a) True

True/False B

100

Dissolving is the process in which the particles of one substance separate and spread evenly throughout another substance.

(a) True

(b) False

(a) True

200

Water’s ability to dissolve many substances is not very important for life on earth.

(a) True

(b) False

(b) False

300

Solubility is the ability of a solvent to dissolve a certain amount of a solute.

(a) True

(b) False

(a) True

400

Condensation is the process of a gas changing to a liquid.

(a) True

(b) False

(a) True

500

Sugar dissolves more easily in hot tea than in cold tea.

(a) True

(b) False

(a) True

Bonus Questions

100

What are examples of solutions?

(a) Air

(b) Soda or soft drinks

(c) Metal alloys such as nickel

(d) All of the Above

(d) All of the Above

200

The amount of solute dissolved in a substance is known as:

(a) Solution

(b) Concentration

(c) Solubility

(d) None of the Above

(b) Concentration

300

What can increase solubility?

(a) Heat

(b) Crushing, crumbling, or cutting

(c) Stirring

(d) All of the Above

(d) All of the Above

400

The solvent contains less than a normal amount of solute.

(a) Concentrated

(b) Diluted

(c) Saturated

(b) Diluted

500

The solvent is holding more than a normal amount of solute.

(a) Concentrated

(b) Diluted

(c) Saturated

(a) Concentrated