Concentration of Solutions Worksheet
A Grade 9 science worksheet covering key concepts and calculations related to the concentration of solutions, including molarity, mass percent, and dilution.
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Concentration of Solutions
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Read each question carefully and provide your answers in the space provided. Show all calculations where necessary.
1. Which of the following best describes a concentrated solution?
A solution with a small amount of solute.
A solution with a large amount of solvent.
A solution with a large amount of solute dissolved in a given amount of solvent.
A solution that cannot dissolve any more solute.
2. What is the unit for molarity?
grams/liter
moles/liter
liters/mole
grams/mole
3. A is a homogeneous mixture of two or more substances.
4. The substance that is dissolved in a solution is called the .
5. The substance that does the dissolving in a solution is called the .
6. Calculate the molarity of a solution made by dissolving 2.0 moles of NaCl in 4.0 liters of water.
7. Describe how you would prepare a 0.5 M solution of glucose (C6H12O6) in 250 mL of water. (Molar mass of glucose = 180.16 g/mol)
8. Diluting a solution increases its concentration.
True
False
9. A saturated solution contains the maximum amount of solute that can be dissolved at a given temperature.
True
False
Use the words below to complete the sentences.
10. The of a solution is a measure of the amount of solute dissolved in a given amount of solvent.
11. Adding more solvent to a solution is called .