Pressure

• Gas pressure


  Due to particle collisions with the walls of the gas container
• Particle collisions


  • Cause a force acting at right angles to the walls of the gas container
  • This force acting over the area of the container causes the gas pressure
• Increasing the volume of the gas container while keeping temperature constant

  Reduces the pressure
• Pressure of a gas

  Inversely proportional to the volume
• Relationship between pressure and volume

  1. Pressure (in Pascals) x Volume (in m^3) = Constant

  2. (Only true if temperature is kept constant)