Factors Affecting Dissolving

Sugar cubes dissolve faster in hot water than cold water.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How does surface area affect the rate of dissolving?

• Surface area has no effect on the rate of dissolving.

• Decreasing the surface area of a solid increases the rate of dissolving.

• Increasing the surface area of a solid increases the rate of dissolving.

• Increasing the surface area of a solid decreases the rate of dissolving.

Explain the role of stirring in the rate of dissolving.

• Stirring increases the rate of dissolving.

• Stirring only affects the temperature of the solution.

• Stirring decreases the rate of dissolving.

• Stirring has no effect on the rate of dissolving.

Why does increasing the temperature increase the rate of dissolving?

• Increasing the temperature increases the solubility of the solute.

• Increasing the temperature decreases the intermolecular forces between the solute and solvent.

• Increasing the temperature decreases the surface area of the solute particles.

• Increasing the temperature increases the kinetic energy of the solvent molecules.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How does stirring affect the rate of dissolving?

• Stirring has no effect on the rate of dissolving.

• Stirring decreases the rate of dissolving.

• Stirring causes the substance to solidify instead of dissolve.

• Stirring increases the rate of dissolving.

Why does increasing the surface area of a solute increase the rate of dissolving?

• Increasing the surface area exposes more solute particles to the solvent.

• Increasing the surface area causes the solute to dissolve faster due to increased temperature.

• Increasing the surface area decreases the concentration of the solute in the solvent.

• Increasing the surface area allows for more solvent to come into contact with the solute.

What happens to the rate of dissolving when stirring is increased?

• The rate of dissolving remains the same.

• The rate of dissolving decreases.

• The rate of dissolving becomes unpredictable.

• The rate of dissolving increases.

Tags

NGSS.MS-PS2-2

What is the relationship between temperature and the rate of dissolving?

• Temperature has no effect on the rate of dissolving.

• Temperature and the rate of dissolving are directly proportional.

• Temperature and the rate of dissolving are inversely proportional.

• Temperature and the rate of dissolving are unrelated.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the effect of temperature on the solubility of most solid solutes?

• Solubility generally increases with an increase in temperature.

• Solubility generally decreases with an increase in temperature.

• Temperature has no effect on the solubility of solid solutes.

• Solubility remains constant regardless of temperature.

Tags

NGSS.MS-PS1-4

How does temperature affect the solubility of most solid solutes?

• Temperature causes the solubility of most solid solutes to remain constant.

• Temperature generally increases the solubility of most solid solutes.

• Temperature has no effect on the solubility of most solid solutes.

• Temperature generally decreases the solubility of most solid solutes.

Tags

NGSS.MS-PS1-4