Free Year 7 Science practice — compare rates, collisions, catalysts and enzymes. No account needed.
Calculate selected rates from supplied data and graph descriptions. Explore collision, catalyst and enzyme effects. Correct answers can trigger celebrations. Feedback and retry options depend on the game.
Learning objective: Interpret supplied rate evidence, use collision theory to predict changes, and distinguish catalyst and enzyme action from uncontrolled effects.
Curriculum anchor: England KS3 Science: chemical reactions; rates; particle collisions; activation energy; catalysts; and enzymes as biological catalysts.
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 variable changed, what was controlled and whether the evidence shows rate, final amount or both. Take a break when you need one.
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? Timing varies by activity. Check the available modes and instructions before starting.
Can it be used on a phone? Controls vary by game. Use the on-screen buttons or read the instructions for keyboard and drag actions.
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