The hydrogen–oxygen fuel cell sim
Open the hydrogen and oxygen valves of a fuel cell, watch electrons drive a motor and water drip out, read the voltage and current, and compare the fuel cell with a battery and a petrol engine.
Electrochemistry: fuel cells · covers the O-Level, IGCSE, GCSE topic
Use it in your lessons
- Try it here: anyone can unlock 2 figures free, and a free account unlocks up to 5. Runs on a laptop, a Chromebook or a phone; nothing to install.
- Present it and share student links with the teacher plan, from US$5 a month, billed yearly.
- Put it on your own website or LMS for US$9, paid once, or every sim from US$29 a month.
Free guide: 12 practicals as sims, and how to run one in a lesson →
Need a version for your exact set-up? Have one made: US$49 a figure in an order of 5.
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- Nanoparticles: surface area to volume simDrag a slider to cut a cube into smaller and smaller cubes, record the surface area and volume, and plot SA:V against 1/a to see why nanoparticles behave differently.
- Ozone layer and CFCs simOpen a CFC valve under a model atmosphere, let the years pass, and watch chlorine atoms thin the ozone layer and the UV index at the ground climb; then close the valve and see how slowly it recovers.
- Plastic waste and recycling simDrag six plastics to landfill, the sea, an incinerator, a pellet-making machine or a depolymerising reactor, and see what really happens, with the carbon dioxide and hydrogen chloride from burning worked out from balanced equations.