Brownian Motion
• Objectives
• Be able to describe an experiment that
demonstrates Brownian motion and
discuss the evidence for the movement
of molecules provided by such an
experiment.
Outcomes
• ALL MUST
• Be able to describe an experiment that
demonstrates Brownian motion
• MOST SHOULD
• Be able to discuss and explain the
evidence for the movement of
molecules provided by such an
experiment.
Brownian Motion
• Movement of
smoke cells
were observed
under the
microscope
• Random
motion
• The motion is due to
the collisions of the
(invisible) air
molecules with the
much larger particles
of smoke.
• Heating the cell
makes the smoke
particles' motion
even more violent
due to the increased
velocity of the air
molecules.
Outcomes
• ALL MUST
• Be able to describe an experiment that
demonstrates Brownian motion
• MOST SHOULD
• Be able to discuss and explain the
evidence for the movement of
molecules provided by such an
experiment.