Radioactive Decay Simulation — Description The simulation shows 48 unstable nuclei arranged in a grid, each decaying randomly over time following the exponential decay law N(t) = N₀ · e^(−λt). Students can select five AQA-relevant isotopes from the dropdown — Carbon-14, Polonium-210, Radium-226, Technetium-99m, and Sodium-22 — each with its correct decay type (α, β⁻, […]
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Simulation of Chadwick’s Neutron discovery Suggested class activity — “What does the data tell us?” Let me check our past conversations for any relevant context first. Chadwick’s Neutron Discovery — Simulation Description The simulation recreates James Chadwick’s 1932 experiment that proved the existence of the neutron. It runs left to right across three stages: A
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Simulation of Alpha particle scattering experiment What the simulation shows An interactive recreation of the 1909 Geiger–Marsden gold foil experiment. Alpha particles are fired from the left toward a gold atom. A dashed circle shows the atom boundary and electron cloud, with a small dense gold nucleus at the centre marked with a positive charge.
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Simulation of the Atom models – Plum pudding model, Nuclear model and Bohr’s model What it does Three tabs, each showing a different historic model of the atom on an interactive canvas: Plum Pudding (Thomson, 1904) — a glowing purple positive-charge cloud with 8 electrons drifting and wobbling inside it. Purely animated, no interaction needed
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Simulation of Energy levels to demonstrate that: “The electron arrangements may change with the absorption of electromagnetic radiation (move further from the nucleus; a higher energy level) or by the emission of electromagnetic radiation (move closer to the nucleus; a lower energy level).” What the simulation does The simulation models the hydrogen atom using the Bohr model
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