Preview - Pnom - Particulate Nature Of Matter

Exploration 2 - Procedure & Drawings

Questions

Please answer the questions below.
  1. Set the MOUSE-INTERACTION to "none - let particles move" (you can choose anything else) so that you control when the particles begin to move.
  2. Press GO/STOP/ADD ELEMENTS to run the model.
  3. Set the MOUSE-INTERACTION to “draw basic wall” or “draw red removable wall” or “draw blue removable wall”. Then add a wall to the bottom of the syringe so that its end is capped and the inside of the syringe is a closed system.
  4. Set MOUSE-INTERACTION to “add green particles”. Add particles to either the outside or the inside of the syringe (but not both) as demonstrated in the picture to the right.
  5. Set the MOUSE-INTERACTIONS chooser to “none - let particles move” to allow the particles to begin to move.
  6. Draw a sketch of the plunger level graph below.

 

Note: Draw your sketch in the sketchpad below
  1. Set the MOUSE-INTERACTION chooser to anything that isn't "none - let particles move", Press SETUP, and then GO/STOP/ADD ELEMENTS to run the model again.
  2. Add particles both outside and inside of the syringe and on both sides of the plunger, so that a relatively equal density of particles is represented on both sides of the plunger.
  3. Save the state of your model for later use by clicking the "SAVE" button.
  4. Set the MOUSE-INTERACTION Switch to “none - let particles move".
  5. Sketch the plunger level graph below.

 

Note: Draw your sketch in the sketchpad below

Why does the plunger move to one end of the syringe when particles are put on only one side of the plunger?

Why are there some minor fluctuations in plunger position when particles are put on both sides of the plunger?

Why does the plunger position remain relatively stable when particles are put on both sides of plunger?

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.