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Atoms and Energy: Energy of Many Atoms
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<strong><font color="#FFFFFF" size="5" face="Verdana, Arial, Helvetica, sans-serif">Atoms
and Energy:</font></strong><font color="#FFFFFF" size="5" face="Verdana, Arial, Helvetica, sans-serif">
Energy of Many Atoms </font>
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<font size="4" face="Verdana, Arial, Helvetica, sans-serif">In an
isolated system, energy is conserved regardless of the number of
atoms it has. The Law of Conservation of Energy, when applied to the
motion of many atoms, is also known as <b>the First Law of
Thermodynamics</b>.</font>
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<font size="4" face="Verdana, Arial, Helvetica, sans-serif">When there are
more than two atoms in an isolated system, the graphs for the kinetic
energy and the potential energy become irregular and difficult to predict.
The model below is an isolated system, with the atoms starting with
different amounts of kinetic and potential energy. Run the model, and
explain how you know if the Law of Conservation of Energy applies here.<br><br><b>In
the model below, the atoms are shaded with colors. The more reddish, the
higher kinetic energy.</b></font>
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<strong><font size="4" face="Arial, Helvetica, sans-serif">As long as you
leave the atoms alone, what happens to the total energy of the atoms over
time?</font></strong>
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It increases
It decreases
It stays the same
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<strong><font size="4" face="Arial, Helvetica, sans-serif">When atoms
collide with each other, they exchange energy. How does the model show
this? How does the graph show this?</font></strong>
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