Gas Properties: free chemistry simulation
Pump particles into a box, heat it and change its volume. Ideal gas law and speed distribution.
▶ Open the simulationFree, no sign-up. Works on phones, tablets and laptops.
The science
A gas is made of fast-moving particles. Their collisions with the walls create pressure. Heating the gas makes the particles move faster, so pressure rises at constant volume, and squeezing the gas into a smaller volume also raises the pressure. Together these give the ideal gas law.
pV = nRT
Things to try
- Hold the volume constant and heat the gas: pressure rises.
- Halve the volume at constant temperature: pressure doubles (Boyle’s law).
- Watch the speed histogram spread out as the gas heats up.
Topics covered
ideal gas law pressure volume temperature kinetic theory maxwell boltzmann
How to use it
Open the simulation, then change the experiment live with the sliders, checkboxes and buttons in the side panel. Drag objects on screen where it makes sense, and use Pause, Step, Speed and Reset in the bottom bar to study every moment.
Frequently asked questions
What does the Gas Properties simulation show?
A gas is made of fast-moving particles. Their collisions with the walls create pressure. Heating the gas makes the particles move faster, so pressure rises at constant volume, and squeezing the gas into a smaller volume also raises the pressure. Together these give the ideal gas law.
What is the key equation?
pV = nRT
Is the Gas Properties simulation free?
Yes. It runs free in any web browser on phones, tablets and laptops, with no sign-up or download.
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