Steer and turn falling atom capsules so each molecule gets exactly the atoms its formula needs — then balance real reactions like 2H₂ + O₂ → 2H₂O.
A free, no-signup, no-ads science game for Grades 6–8 — predict what will happen, watch the real result, and see why. Explore all science games or more chemistry games.
More like this: Atoms & MoleculesPhysical or Chemical?Solubility
What does Reaction Lab teach? Reaction Lab is a Chemistry game: Steer and turn falling atom capsules so each molecule gets exactly the atoms its formula needs — then balance real reactions like 2H₂ + O₂ → 2H₂O. Atoms, reactions, acids and bases — what matter is made of and how it changes.
What grade is Reaction Lab for? Reaction Lab is built for Grades 6–8 (ages 11–14). Every level follows predict → observe → explain, so younger players can reason qualitatively while older ones work the numbers.
How do you play Reaction Lab? Make a prediction, run the experiment on screen and watch the real result, then explain the rule you saw. A wrong prediction is never a game-over — the game shows what actually happened and lets you try again.
Is Reaction Lab free? Yes. Reaction Lab is free, with no ads and no sign-up, and runs in the browser on a phone, tablet or computer.