Kinetic Molecular Theory of Gases

1
Kinetic Molecular Theory of Gases

• Gases consist of molecules that are constantly
  moving through space in strait lines, randomly,
  and with various speeds

2
Kinetic Molecular Theory of Gases

• The average kinetic energy of the gas molecule is
  proportional to the absolute (K) temperature
• Meaning the higher the temperature, the faster
  the gas particles move

3
Kinetic Molecular Theory of Gases

• The gas molecules collide with each other without
  loosing any kinetic energy like billiard balls

4
Kinetic Molecular Theory of Gases

• The molecules volume is tiny compared to that of
  the container the assumption that in comparison
  the gas molecules take up not volume is used

5
Kinetic Molecular Theory of Gases

• Gas molecules have no attraction
• between themselves

6
Kinetic Molecular Theory of Gases

• The collisions against the sides of the container
  constitute the pressure
• of the gas

7
Pressure

• Pressure force / area
• SI unit pascal (Pa) 1 newton / m2
• Atmospheric pressure column of air pressing
  down on a given point

8

• Barometer Manometer

9

• STP Standard Temperature and Pressure
• STP
• 1atm 760 mm Hg 760 torr 101,325 Pa