Chemical Reactions: Adjusting Bond Strength
Try adding only 10 atoms and leaving the temperature slider at its
lowest setting.
Then try adding 30 atoms with the temperature slider at its lowest
setting. How is this reaction different - faster, slower?
Then try both 10 and 30 atoms with different temperatures. How does
increasing the temperature affect the speed at which molecules form.
Try changing the temperature only a little bit at a time, but use the same number of atoms for each experiment.
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Adjusting Bond Strength
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<font size="3" face="Verdana,sans-serif">To adust the strength of a bond,
a special controller is used. To the right is an interactive graph (or
controller). It describes how much energy is needed to break one A<sub>2</sub>
moelcule into two A atoms. The difference between energy levels on the left
and right sides of the graph is a measure of how much energy it takes to
break that bond and is called the bond energy or dissociation energy. <strong>
You can grab the small white square and drag it with your mouse.</strong> If
you drag the square down you will make the energy needed to break the bond
greater, indicating a stronger bond. <strong>Try adjusting the graph now. </strong></font>
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