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  • Kinetic Molecular Theory1. Particles are in random motion becuase of thermal energy until collision2. Particles transfer energy during collisions but energy is preserved.
  • Today we will be learning what Kinetic Molecular Theory and the railroad tank car vacuum is. Does anybody know anything about this?
  • no, but i believe it has something to do with pressure.
  • nope.
  • Well you are right amy! But how does kinetic Molecular theory have to do with this?
  • the tank might be made of metal causing it to callpose
  • is the air pressure from the atmosphere have to do with it?
  •  It is a model that helps us understand the physical properties of gases at the molecular level. It is based on the following concepts...
  • wait I think I know a concept or postulate of the theory
  • OH Yeah I remember and that is because of the thermal energy. also it won't stop until the particles colllide or are acted on by another force.
  • . As the water vapor cools, it condenses into liquid water. Now you have a little bit of liquid in the tank instead of a large amount of water vapor.
  • Yeah, but in an isolated sample of a gas the net energy is ocnserved
  • Great Job guys! Anybody know another postulate?
  • Okay good. Now see I put the model on the board for you...
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