Unit 8 Solutions

Consider soda, which is essentially made of carbon dioxide dissolved in sugar water. The solute is ____, and the solution is ____.

• sugar water; carbon dioxide

• soda; sugar water; carbon dioxide

• carbon dioxide; soda; sugar water

• carbon dioxide; sugar water; soda

Which term best describes a mixture in which particles settle out over time?

• suspension

• solution

• colloid

• emulsion

Which of the following statements best describes a colloid?

• It is a type of heterogeneous mixture that cannot be separated by filtration

• It is a type of homogeneous mixture with whose particles settle out

• It is a type of homogeneous mixture with intermediate sized particles

• It is a type of heterogeneous mixture that cannot scatter light.

Which law best describes the relationship between the concentration of a gas in a solution and its pressure?

• Charles’s Law

• Avogadro’s Law

• Boyle’s Law

• Henry’s Law

Water’s ______ is what makes it such an excellent solvent.

• density

• specific heat

• pH

• polarity

Consider a solution made from a liquid dissolved in liquid. Which term best describes the solution if the liquids separate out into layers?

• osmosis

• immiscible

• soluble

• tyndall effect

What happens to the boiling point of a solution compared to the boiling point of a pure solvent when a nonvolatile solute is added?

• It depends on the type of solute

• It remains the same

• It decreases

• It increases

Ionic substances that form crystals with water molecules are considered to be ____.

• electrolytes
• hydrates

• alloys

• colloids

Which of the following scenarios would most increase the solubility of a solid solute in a liquid solvent?

• Decreasing the solute particle size and increasing the temperature of the solvent

• Increasing the surface area of a solute and increasing the pressure on the solution

• Increasing the solute particle size and agitating the solution

• Decreasing the surface area of the solute and increasing the temperature of the solvent

Refer to the Solubility Curve diagram provided.

How many grams of KCl will dissolve in 100 g of water at 50 ^oC?

• 40 g

• 100 g

• 50 g

• 60 g