Concentrations in Science
This worksheet covers basic concepts of concentrations, including definitions, calculations, and examples, suitable for 7th-grade science students.
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Concentrations in Science
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Date:
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems.
1. Which term describes a solution with a large amount of solute dissolved in a solvent?
Dilute
Concentrated
Saturated
Unsaturated
2. What is the solvent in a sugar water solution?
Sugar
Water
Both sugar and water
Neither
3. A substance that dissolves in a solvent is called a .
4. The is the component of a solution that is present in the larger amount and dissolves the other substance.
5. You have 20 grams of salt dissolved in 80 grams of water. Calculate the concentration of the salt solution as a percentage by mass.
6. Increasing the temperature generally decreases the solubility of a solid solute in a liquid solvent.
True
False
7. A chemist prepares a solution by dissolving 15g of sodium chloride in 250ml of water. What is the concentration of the solution in g/ml?
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