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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
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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.