Lesson Plan: Percentage Concentration Chemistry

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to express and calculate the percentage concentration of a solution by its volume or mass ratio.


Students will be able to

  • explain how a solution can be defined as a percentage by volume or mass,
  • explain the difference between percentage concentration by volume and by mass,
  • recall and use equations to calculate percentage concentration by volume or mass,
  • calculate the percentage by volume (% (v/v)) or mass (% (m/m)) of a solution,
  • calculate the percentage by volume or mass when two different percentage solutions are mixed together,
  • calculate the percentage mass by volume, % (m/v), of a solution.


Students should already be familiar with

  • solutions,
  • percentages.


Students will not cover

  • molar concentrations,
  • mole fractions.

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