The Gas Laws

PV = nRT

An interactive lesson with 6 steps, about 5 minutes: you predict, drag and solve, with instant feedback on every answer. It runs in your browser and needs JavaScript.

What you’ll learn

• Gas pressure comes from molecules colliding with the walls.
• $PV = nRT$, with $T$ in kelvin.
• Boyle: $PV$ constant. Charles: $V \propto T$. At constant volume: $P \propto T$.

Steps

1. Squeeze
2. Pressure from collisions
3. The ideal gas law
4. Balloon in the freezer
5. Hot tyres
6. Mountain snacks