Which condition did you change?
Labs / Chemistry
Partial Pressures
Pick a gas, then dial in how many moles of it to release into the shared container. The particles mix freely, and each gas pushes on the walls all by itself — the stacked bar shows every gas's partial pressure, and they add up to the total pressure through Dalton's law. Change the volume and temperature to see the whole stack respond.
Labs / Chemistry / Partial Pressures
Partial Pressures
Pick a gas, then dial in how many moles of it to release into the shared container. The particles mix freely, and each gas pushes on the walls all by itself — the stacked bar shows every gas's partial pressure, and they add up to the total pressure through Dalton's law. Change the volume and temperature to see the whole stack respond.
Why it matters
Why explore this?
Chemistry connects events too small to see with changes we can measure. This model helps you link particles, energy, and conditions to an observable result.
Explore
Try the model
n 1.0 molPN₂ 0.00 atmPtotal 0.00 atm
Investigate
Questions to test
Predict first, try it in the model, then use what you observe to answer.
What to try
- If you double the moles of one gas, what happens to its partial pressure — and to the total?
- Add helium and nitrogen in equal moles. They move at very different speeds, so why are their partial pressures the same?
- Squeeze the volume down to 5 L. How does compressing every gas at once change the total?
- Heat the container from 150 K to 600 K. Does each gas's share of the pressure grow evenly?
- Can you build a mixture where one gas supplies exactly half of the total pressure? What has to be true of the moles?
Explain
Make sense of what happened
Describe what happened at the particle or energy level, then connect it to the result you saw. A strong explanation names both the cause and the evidence.
Check
Before you leave
What happened to the particles or energy?
What observation supports your explanation?
If you can answer all three using evidence from the model, you understand the main idea. If not, return to Explore and change one setting at a time.