Solution Quiz

What is the term used to describe the substance that is dissolved in a solution?

• Solvent

• Solute

• Solution

• Concentration

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DOK Level 1: Recall

Which factor does NOT affect the rate of dissolution of a solid solute in an aqueous solution?

• Temperature

• Surface area

• Agitation

• Color of the solute

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DOK Level 1: Recall

If you increase the temperature of the solvent, what generally happens to the rate of dissolution of a solid solute?

• It decreases

• It increases

• It remains the same

• It fluctuates

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DOK Level 1: Recall

Which of the following best describes a concentrated solution?

• A solution with a large amount of solute

• A solution with a small amount of solute

• A solution with no solute

• A solution with equal amounts of solute and solvent

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DOK Level 1: Recall

How does increasing the surface area of a solute affect its rate of dissolution?

• It decreases the rate

• It increases the rate

• It has no effect

• It stops the dissolution

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DOK Level 2: Skill/Concept

Explain why stirring a solution can increase the rate of dissolution of a solute.

• Stirring increases the temperature of the solution.

• Stirring decreases the surface area of the solute.

• Stirring helps distribute the solute particles throughout the solvent.

• Stirring changes the chemical composition of the solute.

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DOK Level 2: Skill/Concept

A student dissolves 10 grams of salt in 100 mL of water. If the student then adds another 10 grams of salt to the solution, what happens to the concentration of the solution?

• It decreases

• It increases

• It remains the same

• It becomes saturated

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DOK Level 2: Skill/Concept

Design an experiment to investigate how temperature affects the rate of dissolution of sugar in water. Describe the steps you would take.

• Measure the amount of sugar dissolved at different temperatures.

• Use the same amount of sugar and water at different temperatures and measure the time taken for the sugar to dissolve completely.

• Use different amounts of sugar at the same temperature and measure the time taken for the sugar to dissolve.

• Measure the temperature of the water after the sugar has dissolved.

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DOK Level 3: Strategic Thinking

A student observes that a sugar cube dissolves faster in hot water than in cold water. Explain the reasoning behind this observation.

• Hot water has more energy, which increases the movement of water molecules and helps break down the sugar cube faster.

• Cold water has less energy, which decreases the movement of water molecules and helps break down the sugar cube faster.

• The sugar cube changes its chemical structure in hot water.

• The sugar cube absorbs heat from the hot water and melts.

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DOK Level 3: Strategic Thinking

Create a model to demonstrate how surface area affects the rate of dissolution. Describe your model and the expected results.

• Use large sugar cubes and measure the time taken to dissolve in water.

• Use powdered sugar and measure the time taken to dissolve in water.

• Compare the dissolution time of large sugar cubes and powdered sugar in water.

• Measure the temperature of water before and after dissolving sugar cubes.

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DOK Level 4: Extended Thinking