Grade 9 Science: Understanding Concentrations
A worksheet for Grade 9 science students covering key concepts of solution concentrations, including calculations and definitions.
Includes
Standards
Grade 9 Science: Understanding Concentrations
Name:
Date:
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Read each question carefully and answer to the best of your ability. Show all your work for calculation questions.
1. A is a homogeneous mixture of two or more substances.
2. The substance being dissolved in a solution is called the .
3. The substance that dissolves the solute is known as the .
4. The of a solution indicates the amount of solute present in a given amount of solvent or solution.
5. Which of the following is a unit for expressing concentration?
Grams per liter (g/L)
Liters per gram (L/g)
Grams per gram (g/g)
All of the above
6. A solution with a high concentration of solute is considered:
Dilute
Concentrated
Saturated
Unsaturated
7. A student dissolves 25 grams of salt (NaCl) in 200 mL of water. Calculate the concentration of the solution in g/mL.
8. If you have a 500 mL solution with a concentration of 0.5 g/mL, how many grams of solute are present?
9. Increasing the amount of solvent will always increase the concentration of a solution.
True
False
10. A saturated solution can dissolve more solute at a given temperature.
True
False
11. Observe the image below. Which beaker likely represents a more concentrated solution? Explain your reasoning.
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