Surface Area, Temperature, and Agitation

Stirring the solution increases the rate of dissolution (rate of dissolving).

• True

• False

The smaller the particle size the faster the rate of dissolution (rate of dissolving).

• True

• False

Which of the following statements is true about how using smaller salt crystals would affect the rate of making a salt solution in water?

• Smaller crystals increase the surface area and slow down dissolving.
• Smaller crystals decrease the surface area and speed up dissolving.
• Smaller crystals increase the surface area and speed up dissolving.
• Smaller crystals decrease the surface area and slow down dissolving.

Which will dissolve faster? Crushed table salt or a cube of table salt. Assume they have an equal mass.

• crushed table salt

• crystal of table salt

Tags

NGSS.MS-PS1-2

What combination would dissolve a solid solute the fastest?

• high temperature, no stirring

• no heat, no stirring

• sugar cube, no heat

• high temperature, stirring

Tags

NGSS.MS-PS1-4

Which of the following actions will NOT

increase the rate of dissolution

(dissolving) for solids?

• Stirring the solution

• Decreasing the temperature

• Increasing the surface area of the

  solute

• Increasing the temperature

A polar solute is likely to dissolve in a ________________ solvent.

• Polar

• Non-polar

Ionic bonds are most likely to dissolve in:

• Polar solvents

• Non-polar solvents

A substance with only London Dispersion Forces is likely to dissolve in a:

• Polar solvent

• Non-polar solvent

A substance with hydrogen bonding is most likely to dissolve in a:

• Polar solvent

• Non-polar solvent