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Phase Change: Liquids
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<font face="Verdana, Arial, Helvetica, sans-serif" size="5" color="#FFFFFF"><strong>Phase Change:</strong> Liquids</font>
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<td><img src="atomMainIdea.png" width="98" height="58"></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif" size="4">What does a <b>liquid</b> look like at the atomic scale?
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<strong><font color="#a65d2c" size="5" face="Verdana, Arial, Helvetica, sans-serif">Atomic
Motion in Liquids</font></strong>
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<img width="18" height="6" src="rule.png">
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Here are models of two liquids. One liquid is made of atoms only. The
other is made of triatomic molecules. Run the models and watch them
carefully.
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<br>
The forces between atoms are shown by dashed lines.
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<input type="submit" value="How to use simulation controls" script="script:page:0:message controllerPanel.html" name="submit">
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Liquid 1
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Liquid 2
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Show Interactions
Dotted lines represent forces that exist between neighbors
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<img width="33" height="23" src="atomsBullet.png">
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<strong><font color="#a65d2c" size="5" face="Verdana, Arial, Helvetica, sans-serif">Experiments
and Questions</font></strong>
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<td colspan="2">
<img width="18" height="6" src="rule.png">
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<strong><font size="4" face="Arial, Helvetica, sans-serif">Select "Show
Interactions." Run each liquid model. Then estimate how many dashed lines
there are per atom and write down the number for each model below.</font></strong>
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<strong><font size="4" face="Arial, Helvetica, sans-serif">How far do the
atoms in a liquid appear to travel? As each model runs, follow a particle
or two. Describe the motion of atoms and molecules in a liquid. </font></strong>
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<strong><font color="#a65d2c" size="5" face="Verdana, Arial, Helvetica, sans-serif">Think
about it.</font></strong>
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<strong><font size="4" face="Arial, Helvetica, sans-serif">How could you
identify atoms or molecules in a model that are part of a liquid?</font></strong>
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<strong><font size="4" face="Arial, Helvetica, sans-serif">How does
the motion of the people at the sports event in the picture above
resemble a liquid?</font></strong>
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<img src="crowd2.jpg">
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