1. Kinetic Molecular Theory Images taken from www.bcpl.net/~kdrews/kmt/kmt

2. Kinetic Molecular Theory (KMT) Explains the behavior of an IDEAL GAS so that we can describe the nature of real gases.

3. #1. Gas particles are so small they take up no size and space Volume = 0

4. #2 Gas particles travel randomly in straight-line motion following laws of mechanics

5. #3 Collisions between particles are elastic (conserve energy)

6. #4 The gas particles do not react with each other or the side of the container

7. #5 The average kinetic energy of the particles is directly proportional to the temperature in Kelvins

8. Kelvin scale for temperature extrapolates temperature to a point where molecules cease to move

9. Kelvin scale is also called the absolute temperature scale K = o C + 273

10. Pressure = Force Area Pounds per square inch (psi) Millimeters of mercury (mm Hg) Atmospheres (atm) Kilo-pascal (kPa)

11. Atmosphere is the pressure in our normal air at sea level

12. Pounds per square inch (psi) 14.7 psi = 1.0 atm

13. Millimeters of mercury (mm Hg) 760 mm Hg = 1.0 atm

14. Kilopascal measures Newtons / m 2. 101.325 kPa = 1.0 atm

15. STP is standard temperature and pressure Always 273 Kelvin and 1.0 atm

16. Avagadro’s Principle = volume is directly proportional to # molecules