Chemistry Solutions

What are the two main types of solutions based on solubility?

• Diluted solutions and concentrated solutions

• Solid solutions and liquid solutions

• Homogeneous solutions and heterogeneous solutions

• Saturated solutions and unsaturated solutions

Explain how temperature affects the solubility of a solute in a solvent.

• Temperature affects solubility by providing more energy to break bonds between solute particles and solvent molecules.

• Temperature causes the solute to evaporate

• Temperature has no effect on solubility

• Increasing temperature decreases solubility

Tags

NGSS.MS-PS1-4

Differentiate between a saturated and an unsaturated solution.

• In a saturated solution, the solvent has dissolved the minimum amount of solute at a given temperature, while in an unsaturated solution, the solvent has dissolved the maximum amount of solute at a given temperature.

• In a saturated solution, the solvent has not dissolved any solute at a given temperature, while in an unsaturated solution, the solvent has dissolved the maximum amount of solute at a given temperature.

• In a saturated solution, the solvent has dissolved the maximum amount of solute at a given temperature, while in an unsaturated solution, the solvent has dissolved the minimum amount of solute at a given temperature.

• In a saturated solution, the solvent has dissolved the maximum amount of solute at a given temperature, while in an unsaturated solution, the solvent has not dissolved the maximum amount of solute at a given temperature.

Define a supersaturated solution and provide an example.

• An example of a supersaturated solution is a solution of sugar and water that has been heated to dissolve more sugar than usual, then cooled down slowly without the excess sugar crystallizing out.

• A supersaturated solution is a solution with less solute than the solvent can dissolve.

• An example of a supersaturated solution is salt dissolved in water at room temperature.

• A supersaturated solution is a solution that is cloudy due to impurities.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the key difference between electrolytic and non-electrolytic solutions?

• Presence of free ions for conductivity

• Pressure change

• Temperature variation

• Color difference

Describe what a solubility curve represents in chemistry.

• A solubility curve represents the relationship between density and temperature.

• A solubility curve represents the relationship between volume and pressure.

• A solubility curve represents the relationship between color and concentration.

• A solubility curve represents the relationship between the solubility of a substance and temperature.

Tags

NGSS.MS-PS3-4

Why does adding more solute to a saturated solution not increase its concentration?

• The solvent will freeze if more is added

• The solute will evaporate if more is added

• The solution will turn into a gas if more is added

• A saturated solution already contains the maximum amount of solute that can be dissolved in the solvent at a given temperature.

What happens when a solution is at its solubility limit and more solute is added?

• The additional solute will evaporate

• The additional solute will not dissolve and will form a solid precipitate.

• The additional solute will dissolve completely

• The additional solute will turn into a gas

Tags

NGSS.MS-PS1-2

Explain why some substances dissolve in water while others do not.

• Substances dissolve in water due to their color

• Substances dissolve in water if they can form favorable interactions with water molecules.

• Substances dissolve in water if they are magnetic

• Substances dissolve in water because they are solid

What factors can affect the rate at which a solute dissolves in a solvent?

• Temperature, surface area, stirring/agitation, concentration, nature of the solvent

• Time of day, color of the solute, phase of the moon

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4