UNIT 10 - GASES

KINETIC MOLECULAR (K-M) THEORY OF MATTER (p. 385 – 387 & p. 419 – 420 in text book)
      - based on the idea that particles of mattter are always in motion
      - assumptions of the K-M Theory
        1.)
Gases consist of large numbers of tiny particles that are far apart relative to their size.
             This means that _________________________________________________________
              ______________________________________________________________________

         2.) Collisions between gas particles and between particles and container walls are elastic
              collisions.  This means that ________________________________________________
               ______________________________________________________________________
               ______________________________________________________________________

          3.) Gas particles are in constant, rapid, random motion.
               This can be inferred because ______________________________________________

          4.) There are no forces of attraction or repulsion between gas particles.
               This means that _________________________________________________________
               _______________________________________________________________________
               _______________________________________________________________________

          5.) The average kinetic energy of gas particles depends on the temperature of the gas.
               This means that _________________________________________________________
               _______________________________________________________________________

      - GASES BEHAVE NEARLY IDEALLY UNDER CONDITIONS of _________ temperature,
        _________ pressure, & _________ molar mass.

PROPERTIES OF GASES
      - In order to fully describe a gas, four measurable quantities must be stated.
              * PRESSURE:  ________________________________________________
                 units:  1 atm = _____ mm Hg = _____ torr = _____ kPa = _____ Pa
                 measured with a ___________________






              * TEMPERATURE:  ____________________________________________
                 units:  degrees Celsius (oC), Kelvins (K), or oF (oF not usually used in class)
                 how to convert from oC to K?____________________________________

** “STP” stands for “Standard Temperature and Pressure”.  The conditions at STP are exactly 1 atm pressure and exactly 0 oC. **

              * VOLUME:  _________________________________________________
                 units:  1 Liter (L) = _____ mL = _____ cm3 = _____ dm3

              * QUANTITY:  _______________________________________________
                 units:  moles        how to convert from grams to moles? __________________

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