Ideal Gas Law and Piston Demonstration

Key Concepts

• Ideal Gas Law: Describes the relationship between pressure, temperature, volume, and number of atoms in a gas.
• Piston as a Demonstration Tool: Used to show how changes in these variables affect the state of gas.

Demonstration Details

Initial Conditions

• Constant Temperature & Number of Atoms:
  • As volume decreases, pressure increases.
  • Caused by an increased rate of collisions against the cylinder walls.

Changing Conditions

• Constant Volume & Number of Atoms:
  • Increasing Temperature:
    • Atoms gain increased kinetic energy.
    • Results in increased temperature and pressure.
  • Removing Heat:
    • Kinetic energy dissipates to surroundings.
    • System returns to original conditions.

Adding Atoms

• Constant Pressure & Temperature:
  • Adding atoms to the cylinder increases the volume.
  • Doubling the number of atoms results in doubling the volume.