Eli Minkoff     Chem Notes

INTRODUCTION to GASES

   
PROPERTIES OF GASES  
  • Gases have very low density
  • They can be compressed
  • They expand to fill the available space
     
  • They expand more when heated
  • They diffuse through one another
  • They exert pressure (force / unit area)
EXPLANATIONS, based on
KINETIC MOLECULAR THEORY  
  • Molecules are far apart (lots of empty space)
  • Lots of empty space between molecules
  • Molecules are always in motion
     
  • Molecules move faster (avg. kinetic energy increases)
  • Lots of empty space between molecules
  • Molecules bounce off walls of container

  rev. Feb. 2011