Solutions in Chemistry

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.

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

• Presence of free ions for conductivity

• Pressure change

• Temperature variation

• Color difference

Tags

NGSS.MS-PS2-3

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-PS1-4

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

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

Tags

NGSS.MS-PS1-1

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

Why is it important to consider the temperature when preparing a solution?

• Temperature has no impact on solutions

• Temperature only affects color, not chemical reactions

• Temperature affects solubility and reaction rates.

• Temperature is only important for solid substances, not liquids

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How can you determine if a solution is electrolytic or non-electrolytic?

• Test the conductivity of the solution

• Smell the solution

• Taste the solution

• Check the color of the solution

Discuss the impact of particle size on the rate of dissolution in a solution.

• Larger particles dissolve faster due to increased mass

• Smaller particles dissolve slower due to reduced surface area

• Particle size has no impact on dissolution rate

• Smaller particles have a larger surface area available for interaction with the solvent, leading to faster dissolution rates.