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Phase Change: Evaporative Cooling
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<font face="Verdana, Arial, Helvetica, sans-serif" size="7" color="#FFFFFF"><strong>Evaporation</strong>
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<font color="#a65d2c" face="Verdana, Arial, Helvetica, sans-serif" size="5"><strong>THE
FINAL EXPERIMENT</strong></font>
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In this model you will vary the strength of force between the molecules
and observe the effect on the rate of evaporation. Notice the labeled
scale corresponding to the strength of the intermolecular force. Heat or
cool the substance as you wish. Make note of how the temperature changes
as the model runs.
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Temperature (Celsius)
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Run the simulation.
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Stop
Stop the simulation.
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Reset
Reset the simulation.
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Execute MW script
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Remove the cover. Let it evaporate.
Remove the cover and start the evaporation process.
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Execute MW script
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Show interactions
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Show van der Waals interactions
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<strong><font face="Arial, Helvetica, sans-serif" size="4">What do you
think caused the system to cool down when evaporation happens in the
second model, based on the reasoning from the first model?</font></strong>
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