Preview - Pnom - Particulate Nature Of Matter

Exploration 2 - Experiment and Observation

  1. Press SETUP, and then GO/PAUSE to run the model.
  2. Set the "MOUSE-INTERACTION" chooser to anything that isn't "none - let particles move"
  3. Set MOUSE INTERACTION to "add green particles." Add green particles throughout the space on the left.
  4. Set MOUSE INTERACTION to "add purple particles." Add purple particles to the bottom fourth of the space on the left.
  5. Make sure the "gravity-on?" switch is set to "on."
  6. To change the intermolecular forces between particles, click the DRAW GRAPH button and then draw a new graph by clicking and dragging in the graph side of the view. Then set the "attractive-forces-from-graph" switch to "on."
  7. Try replicating the graph on the right.
  8. When you're ready, switch the MOUSE-INTERACTION chooser to "none - let particles move"
  9. Observe the model for a while. Record your observations on the following step.

 

 

While conducting the experiment described in the previous step, answer the questions below:

Questions

Please answer the questions below.

Record the observations you made during the virtual experiment.

How did the movement of the particles in this model compare to the movement of particles in previous activities?

The graph used in this model is similar to a graph of the attractive and repulsive forces in water. Now, your teacher will do a demonstration that shows these forces in alcohol. Would you expect a graph of the alcohol used in the teacher demonstration to be the same? Describe what you think that graph would look like and why. 

Notes

These notes will appear on every page in this lesson so feel free to put anything here you'd like to keep track of.