Factors Affecting Rate of Dissolving

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

In the above picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?

• stir the powder in the liquid

• freeze the mixture

• add more powder to the liquid

• store the mixture in a dark place

What is the factor affecting the rate of solubility in the statement above?

• Rate of stirring

• Temperature

• Size of solute

• Total surface area

Which of the following would dissolve the slowest?

• a sugar cube in hot water

• a sugar cube in cool water

• powdered sugar in cool water

• powdered sugar in hot water

Tags

NGSS.MS-PS1-4

Which of the following would result in being able to dissolve a greater amount of solid in a solution?

• Lower the temperature.

• Decrease the pressure of the solution.

• Increase the pressure of the solution.

• Heat the solution.

Tags

NGSS.MS-PS1-4

Stirring the solution...

• decrease the rate of solubility

• Doesn't change the rate of solubility

• increase the rate of solubility

• None of the above

When you measure how fast a solute dissolves, you are measuring the

• amount of dissolving

• rate of particle movement

• amount of particle movement

• rate of solubility

The smaller the particle size results in a....

• increase in solubility

• decrease in solubility

• decrease in surface area

• increase in bond strength

Which of the following does not affect the solubility of a solute in a solvent?

• The rate of stirring

• The size of the solute

• The temperature of the solvent

• The amount of the colloid added

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.