8th Grade 5.1

Multiple Choice

Which of the statements about the effect of solutes on solutions is true?

• solutes raise the boiling point of a solvent

• water with a solute dissolved in it will freeze at 0 celisius

• solutes raise the freezing point of a solvent

• antifreeze boils at a lower temperature than pure water

Multiple Choice

Brass is a solution in which a solid is dissolved in a

• liquid

• gas

• solid

• water

Multiple Choice

Which of the following statements about solutions is NOT true?

• solutions are mixtures

• solutions contain a solvent dissolved in a solute

• a solution has the same properties throughout

• the solute in the solution can be a solid, liquid, or a gas

Multiple Choice

Which of the following statements about the particles in a solution is true?

• When an ionic solid mixes with water, its ions repel water molecules

• when a molecular solid mixes with water, the covalent bonds are broken

• when an ionic solid mixes with water, water molecules surround each ion

• when a molecular solid mixes with water, water molecules surround each ion

Multiple Choice

If a suspension is allowed to stand, the particles settle out.

• true

• false

Multiple Choice

Solutions and colloids are similar in that both are suspensions.

• true

• false

Multiple Choice

The largest particles in a colloid are smaller than the largest particles in a solution.

• true

• false

Poll

The freezing point of a solvent decreases as solute is added.

• true

• false

Multiple Choice

Molecular compounds in water conduct an electric current.

• true

• false

Multiple Choice

A characteristic property of a solution is that it can scatter light.

• true

• false