Simulations
Interactive, watermarked physics demonstrations — pick one to adjust its parameters and run it.
Beer-Lambert Absorbance
FREEShine light through a coloured solution in a cuvette and watch the beam dim as absorbance builds with concentration, path length, and wavelength — trace the absorption spectrum and read off the transmittance.
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Equilibrium Shift
INTERSTELLARLet a reversible gas reaction settle into equilibrium, then disturb it — add a reactant, remove product, compress or expand the vessel, or heat or cool it — and watch the concentrations shift and resettle into a new equilibrium, with a visible colour change for the nitrogen dioxide reaction.
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Rates of Reaction
LAUNCHDial up acid concentration, temperature, and marble form and watch a gas syringe fill with CO2 — the marble is the limiting reagent, so every run ends at the same volume, only how fast it gets there changes. Matches the school marble-chips-and-acid practical, traced against a reference run.
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Titration Curve
ORBITAdd strong base to an acid, strong or weak, and trace pH against volume — see the equivalence point's sharp jump and, for a weak acid, the buffer plateau where pH equals pKa at the half-equivalence point.
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