Alpha scattering and models of the atom sim
Fire alpha particles at gold foil, count how many go straight through, are deflected or bounce back, turn the detector to count at each angle, and compare the plum-pudding prediction with the nuclear model.
Atomic structure: how the model of the atom changed · covers the IGCSE, GCSE topic
Use it in your lessons
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Free guide: 12 practicals as sims, and how to run one in a lesson →
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More chemistry sims
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- Water treatment and desalination simDrag a sample of river water through screening, sedimentation, filtration, carbon and chlorination, testing it after each stage; switch stages off to see why each one is there; then desalinate seawater two ways and treat sewage.
- Bioleaching and phytomining simGrow plants on low-grade ore, burn them and dissolve the ash, or let bacteria leach a column of ore week by week, then get the copper out with scrap iron or electrolysis and weigh it.
- Earth's early atmosphere simDrag a timeline from 4.6 billion years ago to today and watch the oceans, algae, plants, limestone and coal appear; once the oceans form, carbon dioxide falls and oxygen rises; record readings and graph them.
- Methane and chlorine in UV light simShine a UV lamp on methane and chlorine in a graduated tube over water: with no UV nothing happens; with it the chlorine fades, oily drops form, the water rises, and CH₃Cl, then CH₂Cl₂, CHCl₃ and CCl₄ build up.