Wednesday, January 19, 2011

Gases 1-19-11

  • molecules move far apart
    • balloon in formed liquid in the balloon when placed in the nitrogen
  • different gases have different densitites
    • helium floats, carbon dioxide sinks in the air
    • molecular weight determines the density (mass)
  • lots of movement 
    • distinguishes between gas, liquid and solids
    • cooling of the balloon (simulation bouncing around)
  • diffusion- bumping into one another
    • smoke hovers over a wood stove
    • static- city pollution/smog
    • candle took a while for smell to get across the room
  • prefixes

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