February 1

A scientist needs to dissolve a solute in a solvent. She decides to heat up the solvent before adding the solute. What effect will this have on the rate the solute dissolves?

• It will increase the amount of time it takes the solute to dissolve.

• It will decrease the amount of time it takes the solute to dissolve.

• It will have no effect on the amount of time it takes the solute to dissolve.

• It will create a chemical reaction.

Two students are dissolving salt into water in science class. Student A says it will take longer for the salt to dissolve if they use a larger beaker. Student B says that the size of the beaker doesn't have an effect on the time it takes the salt to dissolve. Who is right?

• Student A is right

• Student B is right

• Both student A and student B are right

• Neither student A or student B are right.

How does cutting a whole pumpkin pie into eight slices affect its mass?

• Cutting the pie increases the mass.

• Cutting the pie decreases the mass.

• Cutting the pie does not change its mass.

• Cutting the pie makes its mass equal to its volume.

Why do sugar granules dissolve faster than a sugar cube in water?

• The granules are heavier than the cube.

• The granules have more exposed surface area than the cube.

• The sugar cube sinks in water.

• The sugar cube is made to dissolve in hot coffee.