Concentration of Solutions

• What should you be able to calculate by the end of the video?

  The concentration of a solution in grams per decimeter cubed
• What does concentration tell us about a solution?

  The mass of a solute in a given volume of solution
• What should you be able to calculate by the end of the video?

  The concentration of a solution in grams per decimeter cubed
• What does concentration tell us about a solution?

  The mass of a solute in a given volume of solution
• What is a solute?

  A chemical which is dissolved in a solvent
• What is commonly used as a solvent in chemistry?

  Water
• What is the unit of concentration for the definition provided?

  Grams per decimeter cubed (g/dm³)
• What is the equation to calculate concentration?

  Concentration (g/dm³) = Mass (g) / Volume (dm³)
• How do you calculate the concentration if 200 g of a chemical is dissolved in water to a final volume of 1 dm³?

  The concentration is 200 g/dm³
• What is the concentration when 150 g of a chemical is dissolved in water to a final volume of 0.5 dm³?

  The concentration is 300 g/dm³
• How do you calculate the mass of a chemical needed to achieve a concentration of 600 g/dm³ in a final volume of 0.4 dm³?

  The mass needed is 240 g
• How do you find the final volume of a solution containing 200 g of a chemical with a concentration of 800 g/dm³?

  The final volume is 0.25 dm³
• How does increasing the mass of solute affect concentration if the volume remains the same?

  • Increasing the mass of solute increases the concentration.
• How does increasing the volume of the solution affect concentration if the mass of solute remains the same?

  • Increasing the volume of the solution decreases the concentration.
• What additional definition of concentration should higher tier students learn?

  Higher tier students learn another definition of concentration in a later video
• Where can students find more questions on concentration?

  In the revision workbook linked in the video