Experimental Chemistry — Interactive Lab
A virtual separation-techniques bench based on the O-Level Experimental Chemistry topic. Drag, tilt and click the apparatus like the real thing — then check the notes to see the chemistry behind each step.
Filtration
Fold the paper, load the funnel, tilt the beaker and collect the filtrate.
Simple Distillation
Boiling chips, counter-current cooling, pure water from salt water.
Fractional Distillation
Beads, a 78 °C plateau, and a receiver swap you mustn't miss.
Separating Funnel
Drain the bottom layer and stop right at the boundary.
Sublimation
Warm gently, catch the purple vapour on a cold flask.
Paper Chromatography
Two strips, two run times — and the same Rf every time.
Evaporation
Stand the dish on the gauze, pour in the solution and boil off the water to leave the solid behind.
Crystallisation
Heat only to saturation, then switch the burner off and let it cool — or it dries to a dull powder.
Question Bank
Fifteen past-year Paper 1 multiple-choice questions covering every technique. Choose an answer, confirm, and see it marked instantly.