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LIVE LAB 19 • STATES OF MATTER & GAS LAWS

P–V–T State Space & Gas Laws 3D Lab

Explore pressure, volume, temperature and amount in a live piston model, trace gas-law curves, collect data and connect macroscopic changes with particle motion.

Foundation to AdvancedFoundation • Core • AdvancedInteractive 3D P–V–T laboratoryPersonal study

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P–V–T State Space & Gas Laws 3D Lab — actual simulation with its model and controls

ACTUAL LAB PREVIEW

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COMPLETE CONCEPT GUIDE

P–V–T state space: pressure, volume and temperature

Use a live piston-and-particle model to connect the ideal-gas equation with Boyle’s law, Charles’s law and the pressure law. Change one variable, hold the required conditions fixed and read the corresponding curve.

Ideal-gas state

Pressure, volume, temperature and amount are linked by PV = nRT. A change in one variable requires another part of the state to respond unless an external constraint holds it fixed.

Boyle’s law

At fixed temperature and amount, pressure is inversely proportional to volume. Compressing the gas increases the frequency of particle collisions with the container walls.

Charles’s law

At fixed pressure and amount, volume is directly proportional to absolute temperature. A freely moving piston rises as heating increases particle momentum.

Pressure law

At fixed volume and amount, pressure is directly proportional to absolute temperature. Locking the piston keeps volume constant while faster particles raise the pressure.

Gas-law graphs

P–V is a rectangular hyperbola under Boyle conditions, while V–T and P–T become straight lines when temperature is measured in kelvin and the required variables remain fixed.

P–V–T GAS LAWS FAQ

Questions students ask while mastering this concept.

What does P–V–T state space mean?

It represents a gas state using pressure, volume and temperature together. For a fixed amount of ideal gas, the variables are constrained by PV = nRT.

Why must gas-law temperature ratios use kelvin?

Kelvin begins at absolute zero, so it is the appropriate proportional temperature scale. Celsius has an offset and cannot be used directly in gas-law ratios.

What remains constant in Boyle’s law?

Temperature and amount of gas remain constant while pressure and volume change inversely.

Why does pressure rise when a fixed-volume gas is heated?

Heating raises molecular speeds. Particles strike the walls more often and with greater momentum change, producing greater pressure.

P–V–T State Space & Gas Laws 3D Lab

P–V–T State Space & Gas Laws 3D Lab

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