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PHET SIMULATION: Solids, Liquids, Gases, and Gas Laws http://phet.colorado.edu/en/simulation/gas-properties I CAN: use the kinetic theory to explain the behavior of solids, liquids, and gasses. ALL ANSWERS TO THE FOLLOWING QUESTIONS WILL BE ON A SEPARATE SHEET OF PAPER! 1. Open Gas Properties and then use the pump to put a little gas into the box. a. Observe gas particles’ behavior. b. Pump in some lighter particles and ON A SPEPERATE SHEET OF PAPER list the similarities and differences that you see between heavy and light particles. c. Use the simulation to see how changing the temperature affects the behavior of the gas particles. d. Write a description for a gas based on your observations; include a drawing to help with your description. 2. How fast do you think the air particles in this room are moving compared to a car going 50 mph (about 22m/s)? ***CHECK IN WITH MR. RUSSELL*** 3. Using the simulation, test your idea from question 2 and give evidence to support or revise your thoughts. For evidence, include how you used the simulation to collect data, and any calculations you used to find this answer. 4. Sketch a graph of Kinetic Energy (motion of particles) vs. Temperature. Use this graph to describe the relationship between kinetic energy and temperature. ***CHECK IN WITH MR. RUSSELL*** 5. Write a paragraph that explains the differences and similarities between solid, liquid and gas particle motion; include drawings to help with your explanations. ***CHECK IN WITH MR. RUSSELL*** PHET Simulation: Gas Laws http://phet.colorado.edu/en/simulation/gas-properties I CAN: predict changes in gas pressure due to changes in temperature, volume, and number of particles. 1.) Open Gas Properties and then use the pump to put a little gas into the box. a. Observe the gas particles behavior. b. Describe the behavior of the gas particles on a separate sheet of paper. ***CHECK IN WITH MR. RUSSELL*** It is stated that changes in the volume, temperature, and pressure have predictable effects on the behavior of a gas. At the top right of your simulation you can keep the volume, temperature, and pressure constant by clicking on each individual circle. You can change the volume by sliding the left side of the container (by the little man) You can change the temperature of the simulation by turning the heat control up or down. Your job is to figure out how volume, temperature, and pressure affect the behavior of a gas. Be sure to focus on what happens when you change something specific, how does it affect the gas? An example statement would be (this statement is not correct, but is how your response needs to be worded): As the temperature of the gas molecules increased from 21-200K, gas molecules decreased in movement and the pressure decreased from 1atm to 0atm with a constant volume of gas. I observed this when I turned the temperature up on the simulation because the overall pressure dropped inside the container. One variable temperature, pressure, volume, MUST REMAIN CONSTANT in each simulation that you run! In each of your statements you must include: starting temperature, ending temperature (actual numbers). Starting pressure, ending pressure (actual numbers), starting volume, ending volume (how far did you move the little man, large volume or small volume?) After you complete a statement, you need to CHECK IN WITH MR. RUSSELL!! By the end of this simulation you should be able to explain and predict what will happen to a gas based on the temperature, pressure, and volume.
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