Free Year 7 Science practice — model states, changes, diffusion, pressure, density and mass. No account needed.
Use particle models for solids, liquids, gases, state changes, diffusion, Brownian motion, pressure, density and mass conservation. The default practice mode is untimed, so the learner can think before choosing. Correct answers build a gentle celebration; mistakes receive corrective feedback and return later rather than causing a penalty spiral.
Learning objective: Apply a bounded particle model to selected state, diffusion, pressure, density and conservation evidence.
Curriculum anchor: England KS3 Science: particle models, changes of state, conservation of material and mass, diffusion, Brownian motion, gas pressure and density differences.
This game is designed as short independent practice after an idea has been introduced. It does not replace direct teaching, mathematical or scientific discussion, or an adult checking whether the learner can explain the idea away from the screen.
Ask which observations the particle model explains and keep particles distinct from the substance’s visible bulk properties. Stop while attention is still good. A short accurate return tomorrow is more useful than extending a tired session today.
Does it need an account? No. The game runs in the browser and asks for no name, email address, school or location.
Is it timed? Practice is untimed. Where a sprint exists it is optional. Times Tables Sprint also includes MTC-style independent practice, not an expected-standard judgement.
Can it be used on a phone? Yes. Buttons support touch and keyboard use; sorting always has a tap alternative to dragging.
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