What could make a few alpha particles turn sharply while most pass straight through? Use scattering evidence to explain how scientists revised the model of an atom.
Pupils try “Infer the hidden centre”. Includes the editable PowerPoint, a 50-minute lesson plan and a printable pupil sheet with equipment, instructions, example evidence and worked teacher answers.
AQA GCSE physics for ages 14–16. Part of the atoms and radioactive decay sequence.
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