Solutions Post-Test Review

Which best explains the difference between a solute and a solvent?

• A solute is a substance that is dissolved and a solvent is a substance that does the dissolving

• A solvent is a substance that is dissolved and a solute is a substance that does the dissolving

• A solvent is always a liquid and a solute is always a gas

• A solute is always a solid and a solvent is always a liquid

When making Kool-Aid, what is the purpose of agitating the mixture?

• To increase the rate at which the solvent dissolves in the solute

• To increase the rate at which the solute dissolves in the solvent

• To make it taste better

• To seed the mixture and initiate the process of crystallization

A solute is a substance that:

• evaporates

• does the dissolving

• gets dissolved

• sublimates

A solvent is a substance that:

• evaporates

• does the dissolving

• gets dissolved

• sublimates

Using the given solubility curve, determine whether a solution made with 34 g of KCl at 20°C is:

• Unsaturated

• Strong

• Saturated

• Supersaturated

A saturated solution of NH4Cl is formed from one hundred grams of water. If the saturated solution is cooled from 85°C to 45°C, how many grams of precipitate are formed?

• 10

• 20

• 30

• 40

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

A solution of KI is made with 100 ml of water and 50 grams of KI. It is kept at 10 degrees Celsius. Classify this solution.

• Saturated

• Unsaturated

• Supersaturated

• Polysaturated

Tags

NGSS.MS-PS3-4

A solution of KI is made with 100 ml of water and 200 grams of KI. It is kept at 10 degrees Celsius. Classify this solution.

• Saturated

• Unsaturated

• Polysaturated

• Supersaturated

The maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature describes a solution’s

• Solubility

• pH

• Curve

• Compound

Which substance is called the universal solvent?

• Salt

• Ethanol

• Water

• Chocolate