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Elements, Compounds and Mixtures
Brownian Motion.
All matter is made of tiny
particles. The particles are
atoms, ions or molecules.
In a liquid or gas, the particles
move at random.
The random motion of
particles (called Brownian Motion)
can be seen by looking at smoke particles in air through a microscope.
The smoke
particle (shown as a blue ball)
has a jerky motion.
As (invisible) air molecules collide
with the smoke particle,
they push it about in different
directions at random.
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Copyright © 2008 Dr. Colin France. All Rights Reserved.
