To get started with the Phet simulation on Gas Properties: 1) Open the Phet simulation on Gas Properties: http://phet.colorado.edu/en/simulation/gas-properties This URL is also available as a link on the course Brightspace site. This is an HTML5-based simulation and it should run on almost any moderately up-to-date computer/browser. If you're having trouble, consult with your other group members. 2) After it's open, click on the Energy icon on the start page. 3) Start the simulation by giving an all-the-way-up-and-down stroke on the air pump handle. (A complete stroke up and down is useful to get enough molecules into the simulation to see their distribution easily.) Open the particles panel on the right by clicking on the "+" sign. Keep the gas on "Heavy Species" (blue ball under the pump); they're easier to see. Using the Phet simulation on Gas Properties to investigate energy distributions: 1) As you push down on the pump handle, simulated molecules (blue balls) enter the chamber with a certain amount of energy. Give a second all-the-way-up-and-down stroke on the air pump. After two pumps you should have about 100 molecules in the chamber (the number of