Factors Influencing the Rate of Dissolving

What happens to the rate of dissolving when the solute particles are smaller?

• It decreases

• It remains the same

• It increases

• It fluctuates unpredictably

What is the main reason smaller solute particles dissolve faster?

• They absorb heat more quickly

• They are more dense

• They have a greater surface area exposed to the solvent

• They are lighter

How does temperature affect the rate of dissolving?

• Higher temperatures decrease the rate

• Temperature has no effect on the rate

• Higher temperatures increase the rate

• Only extremely low temperatures affect the rate

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why does stirring the solution speed up the dissolving process?

• It decreases the surface area of the solute

• It brings more solvent in contact with the solute

• It increases the size of the solute particles

• It reduces the temperature of the solution

What is the difference between the rate of dissolving and solubility?

• There is no difference; they mean the same thing

• Rate refers to how fast a solute dissolves, while solubility is how much can dissolve

• Rate is a measure of temperature, while solubility is not affected by temperature

• Solubility refers to the speed, and rate refers to the amount