Solubility and Solutions

When you put a Kool-Aid packet in a pitcher of water, which one is the solvent?

• Kool-aid
• Water

A solution that is able to dissolve additional solute is best described as

• supersaturated.

• concentrated.

• saturated

• unsaturated.

Which would NOT increase the rate at which a sugar cube dissolves?

• Reducing the amount of solvent

• Crushing the sugar cube

• Stirring the solution

• Heating the solvent

Stirring the solution...

• Slows the dissolving process

• Doesn't change the dissolving process

• Speeds up the dissolving process

• None of the above

A solution is defined as

• A mixture of oil and water

• A mixture where a substance is dissolved

• A mixture that contains two solids

• None of the above

Which of the following is an electrolyte?

• sodium chloride
• sugar (carbon, oxygen, hydrogen)
• water (hydrogen and water)
• sand (silicon and oxygen)

A homogeneous mixture that is uniformly mixed is

• A mixture of oil and water

• A solution

• A mixture of ice and water

• None of the above

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

Oil molecules are nonpolar. What kind of solvent is required to remove an oil stain?

• saturated
• unsaturated
• polar
• nonpolar

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

• adding more solute.

• adding ice.

• heating the solvent.

• removing some solvent.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4