Concentration of Solutions — description & class activity
Concentration of Solutions
An interactive simulation that teaches how to calculate the concentration of a solution. A live CuSO₄ beaker sits on the left: the liquid’s fill height represents the volume of solution, while the colour depth and the density of dissolved particles represent how concentrated it is — so a stronger solution literally looks darker and busier. On the right, the calculation is worked out live, showing the formula with the unknown highlighted and the numbers substituted in.
Pupils choose one of three modes: find concentration (c = n ÷ V), find amount of solute (n = c × V), or find volume (V = n ÷ c). Two sliders set the known quantities and the third is calculated automatically. Optional toggles in the Adapt menu add the solute mass in grams (mass = n × Mᵣ) and the concentration in g/dm³, both using CuSO₄’s relative formula mass of 160.
Built on the ClassAdapt design system: light/high-contrast projector-safe default with a dark theme toggle, full accessibility menu (Irlen colour overlays, colour-vision filters, reading ruler, dyslexia-friendly spacing, reduce motion), keyboard shortcuts (A for Adapt, 1/2/3 for modes, Backspace to reset), and aria-live announcements for screen readers. Fully responsive for whiteboard, tablet, and phone. AQA GCSE scope only.
Searchable phrases
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