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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

NGSS.MS-PS3-4

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

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

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

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

• True

• False

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

How does cold water affect the speed of dissolving?

• Cold water slows down dissolving.

• Cold water speeds up dissolving.

• Cold water has no effect on dissolving.

• Cold water has no effect on dissolving.

Tags

NGSS.MS-PS1-4

John has three cups of sugar particles. Cup 1 has large sugar particles, Cup 2 has medium-sized particles, and Cup 3 has small sugar particles. If John pours each cup in water, which cup of sugar particles will dissolve the fastest?

• Cup 1 will dissolve the fastest.

• Cup 2 will dissolve the fastest.

• Cup 3 will dissolve the fastest.

• They will dissolve at the same rate.