What factor increases the dissolution rate due to more surface area being exposed to the solvent?

• Granulated sugar compared to a sugar cube

• Adding a solute with a common ion

• Decreasing the temperature

• Using a non-polar solvent for a polar solute

What process allows fresh solvent molecules to come into contact with the solute, speeding up dissolution?

• Condensation

• Evaporation

• Agitation or stirring

• Freezing

How does temperature affect the dissolution process?

• Increases molecule movement, aiding dissolution

• Decreases molecule movement

• Has no effect on dissolution

• Only affects gases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What type of solutes dissolve well in polar solvents?

• Insoluble solutes

• Solid solutes only

• Polar solutes

• Non-polar solutes

What is the common-ion effect?

• A decrease in solubility when a common ion is added

• An increase in solubility when a common ion is added

• The effect of temperature on solubility

• The effect of agitation on solubility

Tags

NGSS.HS-PS1-6

What happens when the solute and solvent have strong attractions to each other?

• The solvent evaporates

• The solute does not dissolve

• The solute dissolves more slowly

• The solute dissolves more easily

Which factor does NOT directly affect the rate of dissolution?

• Surface area of the solute

• Presence of other solutes

• Agitation of the solution

• Color of the solvent

What is solubility?

• How much of a solute can dissolve in a given amount of solvent

• The color change when a solute dissolves

• The temperature at which a solute dissolves

• How quickly a solute dissolves in a solvent

Why do polar solutes dissolve well in polar solvents?

• Because of their shape

• Because of their strong attractions to each other

• Because of their boiling points

• Because of their solid state

What effect does heating up the solvent have on the molecules?

• Makes them freeze

• Gives them more energy and makes them move faster

• Makes them evaporate

• Makes them move slower

Tags

NGSS.MS-PS1-4