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Chemistry and Biochemistry Chemistry and Biochemistry
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  5. Demo 20: Molecular Motion Demonstrator

Molecular Motion Demonstrator

Materials

Molecular Motion Demonstrator

Various sizes of Ball Bearings and Beads

    

Procedure

  1. Place demonstrator on top of the overhead projector.
  2. Select the proper ball set and accessory for the theory you wish to demonstrate.
  3. Put the specified number and type of balls within the frame. Turn on the motor and adjust the speed until the desired motion is achieved.
  4. Turn on and focus the overhead projector.
  5. The demonstrator is essentially a four-sided frame mounted over a glass plate. A low-voltage D.C. motor vibrates the frame over a range of speeds.