UTF-8Gas
At the end of this simulation, you MUST click on 'Webspace' in the menu above and 'Submit Current Page...' for a grade.
Also, print the page and bring your answers to class for discussion.
Below you will find a simulation like that described in your quiz. The shading of the particles indicates their kinetic energy. White indicates low KE, red
indicates high KE, and there are continuous shades in between. The particles to the left of the barrier exhibit a small inter-particle attractive force, which
makes them non-ideal particles in a gas state.
The graph on the right will plot average kinetic energy for all the particles through time in red. The average stored (or potential) energy for all particles is
plotted in blue. The total energy is plotted in black.
We will run the simulation starting with the small block covering the pore in the barrier. Observe the three different plots in the graph.
After you have observed the simulation running long enough to convince yourself it is no longer changing, pause the simulation and use the arrow cursor
to select the smallest barrier blocking the small pore in the vertical barrier. Delete it and continue the simulation paying careful attention to the y-axis
scale bar on the graph.
org.concord.modeler.PageTextField40060<html>
<head>
</head>
<body marginheight="5" marginwidth="5">
Please type your name:
</body>
</html>
falsetruetruetrue255 0 014truetruetrue255 0 014org.concord.modeler.PageTextArea800100<html>
<head>
</head>
<body marginheight="5" marginwidth="5">
1.) Which (if any) of the three energy plots indicate a net change in
average value?
</body>
</html>
falseorg.concord.modeler.PageTextArea800100<html>
<head>
</head>
<body marginheight="5" marginwidth="5">
2.) After removing the small block, which (if any) of the three energy
plots indicate a net change in average value? Indicate any trends as
'increasing' or 'decreasing'.
</body>
</html>
falseorg.concord.mw2d.activity.AtomContainer2013-0830 Gas pore_katiemoon$0.mmlorg.concord.modeler.PageXYGraphorg.concord.mw2d.models.MolecularModel0Time (fs)Kinetic Energy/ParticlePotential Energy/ParticleTotal Energy/Particle300350xy22045-1-1org.concord.modeler.PageTextArea800200<html>
<head>
</head>
<body marginheight="5" marginwidth="5">
What can you say about the 'average' color of the particles that manage to
'vent' into the right-hand chamber? Can you say anything about the
'average' color of the particles in the right-hand vs. left-hand
compartments (let the simulation run for several minutes to observe).
</body>
</html>
-1org.concord.modeler.PageTextArea800200<html>
<head>
</head>
<body marginheight="5" marginwidth="5">
Considering the total energy is staying the same, what can you say about
the average kinetic energy for the particles vs. the average stored
(potential) energy for the particles after the block is removed and gas
particles 'escape' their confinement? Is there a relationship?
</body>
</html>
-1