Solution, Solubility Curves, Molarity and Molality

You can make a solute dissolve more quickly in a solvent by

• adding more solute.

• adding ice.

• heating the solvent.

• removing some solvent.

Tags

NGSS.MS-PS1-4

A solution that contains the maximum amount of the solute it can hold at a given temperature is

• diluted.

• saturated.

• supersaturated.

• unsaturated.

The amount of solute that can be dissolved in a specific amount of solvent at a given temperature is its

• concentration.

• density.

• dilution.

• solubility.

Three 10 g samples of sugar are represented below.

Sample A dissolves in water more slowly than sample B.

Sample B dissolves more slowly than sample C.

Which of the following best explains why sample A dissolves more slowly than the other two?

• It has the most volume.

• It has the smallest surface area.

• It has the largest number of sugar molecules.

• It has the fewest bonds between sugar modules.

Tags

NGSS.MS-PS1-2

A student pours mineral salts into a bottle of cold water. Which of the following best explains why shaking the bottle will affect the dissolving rate of the salt?

• Shaking exposes the salts to the solvent more quickly.

• Shaking helps more water evaporate.

• Shaking equalizes the water temperature.

• Shaking causes more ions to precipitate out of solution.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which substance has 80 grams of solute dissolved in 100 grams of water at 50 °C?

• Potassium Bromide

• Ammonium Chloride

• Potassium Chloride

• Lithium Hydroxide

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

heterogeneous mixture in which some of the particles settle out of the mixture upon standing

• solution
• colloid
• solvent
• suspension

type of homogeneous mixture that doesn't separate on its own with large and intermediate particles sizes (milk, paint, fog...)

• solution

• colloid

• suspension

• saturated

In this mixture, which of the following will be the solute?

• The water in the glass
• The glass that holds the final mixture
• The solution containing both powder and water
• The powder on the spoon

If we are making Kool-aid with sugar, Kool-aid powder, and water, which part is the solvent?

• water
• powder
• sugar
• powder and sugar