rate of dissolution

Why does the rate of dissolving increase as the temperature increases?

• The solute molecules move faster at higher temperatures

• The solute particles become smaller at higher temperatures

• The solvent molecules become slower at higher temperatures

• What is the effect of agitation on the rate of dissolving?

Tags

NGSS.MS-PS1-4

What is the effect of agitation on the rate of dissolving?

•  It decreases the rate of dissolving

•  It has no effect on the rate of dissolving

• It increases the rate of dissolving

•  It changes the color of the solute

How does agitation help in dissolving a solute more quickly?

• It increases the temperature of the solvent

•  It increases the weight of the solute

• It brings fresh solvent into contact with undissolved solid

• It changes the shape of the solvent

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Why does a solute with a larger surface area dissolve faster?

• It has more solute surface area in contact with the solvent

•  It has fewer solute particles in contact with the solvent

• It has a higher temperature compared to other solutes

• It has a different color compared to other solutes

What is the difference in dissolving time between a sugar cube and a teaspoon of granular sugar?

• The sugar cube dissolves faster

• The teaspoon of granular sugar dissolves faster

• Both dissolve at the same rate

• The dissolving time depends on the temperature of the solvent

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-4

What can increase the rate of dissolving even further?

• Using a solute with a larger particle size

• Using a solute with a smaller particle size

• Decreasing the temperature of the solvent

• Decreasing the agitation of the mixture

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The finer the particles or the more surface area that is exposed, the slower the rate of dissolving.

• True

• False

Joe set up an experiment to determine if the temperature of the solvent has an affect on the rate of dissolution. Identify the trial that will dissolve the quickest.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

You want to make chocolate milk using Hershey's syrup. How could you speed up the rate of the syrup dissolving in your milk?

• Put the syrup in the fridge to cool before putting it in the milk

• Put the syrup in the milk and let it sit

• Increase the amount of syrup you put into the milk

• Warm up the syrup before putting it into the milk

Tags

NGSS.MS-PS1-4

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