Level 2 Solutions 5.6C

Sven mixes 50 grams of salt into 200 mL of water. After stirring, he notices that all the salt dissolves. Which statement best explains why this mixture is a solution?

• The salt and water can be separated by a magnet.

• The salt is evenly distributed and cannot be seen in the water.

• The salt forms a layer at the bottom of the container.

• The water changes color.

Brayden adds sugar to tea until no more will dissolve and some sugar remains at the bottom. What is the best description of the tea at this point?

• It is a saturated solution.

• It is a suspension.

• It is a compound.

• It is a pure substance.

Logan wants to separate a solution of saltwater. Which method would be most effective?

• Using a filter paper

• Letting the water evaporate

• Using a magnet

• Shaking the mixture

Emma mixes sand and water, and then stirs the mixture. Which of the following best explains why this is not a solution?

• The sand dissolves completely.

• The sand settles at the bottom after some time.

• The water changes color.

• The sand and water cannot be separated.

Emmalen dissolves 10 grams of sugar in 100 mL of water. Which of the following is the solute in this solution?

• Water

• Sugar

• The container

• Air

Jaci prepares a solution by mixing 30 mL of vinegar with 70 mL of water. Which statement is true about the resulting mixture?

• The vinegar and water can be separated by filtration.

• The mixture is a solution because the vinegar is evenly distributed in the water.

• The vinegar will settle at the bottom.

• The mixture is a suspension.

Mia wants to increase the rate at which sugar dissolves in water. Which of the following actions will help her achieve this?

• Using cold water

• Stirring the mixture

• Adding more sugar than water

• Placing the mixture in the freezer

Ryley observes that when he adds cocoa powder to milk, the cocoa does not dissolve completely and settles after a while. What type of mixture has Ryley created?

• Solution

• Suspension

• Compound

• Element

Nathan is given a clear, colorless liquid and told it is a solution. Which property would best confirm that it is a solution?

• The liquid is cloudy.

• The components can be separated by a magnet.

• The liquid is uniform throughout.

• The liquid separates into layers over time.

Autry mixes oil and water in a beaker. After shaking, the oil floats on top of the water. Why is this not a solution?

• The oil and water are both liquids.

• The oil and water do not mix evenly.

• The oil dissolves in the water.

• The oil changes color.