Chemistry

Pick a topic to start. Every lesson pairs an explanation with something you can drag, mix, or break.

What makes a change chemical, word equations, types of reaction, acids and alkalis, neutralisation.

Elements, compounds and mixtures; solutions and suspensions; how fast things dissolve and how much can.

Magnetic attraction, filtration, evaporation, distillation and chromatography — and how Singapore gets its water.

Inside the atom, proton number and isotopes, relative atomic mass, molecules and chemical formulae.