Solutions & Solubility

What is the difference between polar and nonpolar substances?

• Polar substances have a significant difference in electronegativity between atoms, leading to a dipole moment.

• Nonpolar substances have a significant difference in electronegativity between atoms, leading to a dipole moment.

• Polar substances have an even distribution of electrical charge, while nonpolar substances do not.

• Polar and nonpolar substances are identical in their chemical properties.

What is agitation in the context of solubility?

• A process of heating a solution to increase solubility.

• The act of stirring or shaking a solution to enhance mixing of solute and solvent.

• A method of cooling a solution to decrease solubility.

• The addition of more solute to a saturated solution.

What factors affect the solubility of a substance?

• Temperature, surface area, agitation (stirring), and the amount of solvent.

• Pressure, color, size of particles, and the amount of light.

• Type of container, humidity, temperature, and the amount of air.

• Concentration, pH level, temperature, and the type of solvent.

What effect does stirring have on the solubility of a solute?

• Stirring decreases the rate of solubility by keeping the solute particles settled.

• Stirring has no effect on the solubility of a solute.

• Stirring increases the rate of solubility by distributing the solute particles throughout the solvent more quickly.

• Stirring only affects the temperature of the solvent, not the solubility.

What is an example of a nonpolar substance that cannot form a solution in water?

• An oil spill in the ocean

• Table salt

• Sugar

• Vinegar

What is a supersaturated solution?

• A solution that contains less solute than it can theoretically hold.

• A solution that contains exactly the amount of solute it can hold.

• A solution that contains more solute than it can theoretically hold at a given temperature, often achieved by heating and then cooling the solution.

• A solution that is completely solid at room temperature.

How many particles are formed when CH3OH (methanol) dissolves in water?

• 1 particle.

• 2 particles.

• 3 particles.

• 4 particles.

What is solubility?

• Solubility is the ability of a substance (solute) to dissolve in a solvent at a given temperature and pressure.

• Solubility refers to the maximum amount of solute that can be added to a solvent without changing its state.

• Solubility is the process of separating a solute from a solution.

• Solubility indicates how much solvent is needed to dissolve a given amount of solute.

How does temperature affect solubility?

• Increasing temperature generally increases the solubility of solids in liquids, while decreasing the solubility of gases.

• Temperature has no effect on the solubility of solids or gases.

• Increasing temperature decreases the solubility of solids in liquids and increases the solubility of gases.

• Temperature only affects the solubility of gases, not solids.

What is an unsaturated solution?

• A solution that contains more solute than it can dissolve.

• A solution that contains less solute than it has the capacity to dissolve at a given temperature and pressure.

• A solution that has reached its maximum solubility.

• A solution that contains no solute at all.