Unit 9 · Thermodynamics

Chapter 9.1

Molecules in a Box: Temperature, Pressure, and the Ideal Gas Law

A tire's pressure is nothing but trillions of tiny collisions per second, and its temperature is how hard each one hits. Count the collisions and the gas law falls out.

free · lesson 1 of 27

By the end

  1. 01Explain gas pressure as momentum delivered by molecular collisions per unit wall area
  2. 02Relate temperature to average molecular kinetic energy and read a speed distribution by its shape
  3. 03Apply the ideal gas law to relate pressure, volume, temperature, and amount of gas
  4. 04Read and draw pressure–volume and pressure–temperature graphs, including the extrapolation to absolute zero

In unit 9

  1. 9.1Molecules in a Box: Temperature, Pressure, and the Ideal Gas Law
  2. 9.2Heat: Thermal Equilibrium, Specific Heat, and Conduction
  3. 9.3The First Law of Thermodynamics and PV Diagrams
  4. 9.4Entropy and the Second Law
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