UTF-8Newton's Laws at the Atomic Level: Attractions between atoms.241240246111org.concord.modeler.text.LineIcon750.03010105<html>
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<strong><font face="Verdana, Arial, Helvetica, sans-serif" color="#FFFFFF" size="5">Newton's
Laws at the Atomic Level:</font></strong><font face="Verdana, Arial, Helvetica, sans-serif" color="#FFFFFF" size="5">
Attractions between atoms.</font>
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false11org.concord.modeler.text.LineIcon750.085101015<html>
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<img src="atomMainIdea.png" width="98" height="58">
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<font face="Verdana, Arial, Helvetica, sans-serif" size="4">All
neutral and oppositely charged atoms attract to each other. Do these
attractive forces follow <a href="script:page:0:message newtonsLaws.html">Newton's
third law</a>?</font>
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-2820121115.0org.concord.modeler.PageTextBox750.0180.0<html>
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<font size="4" face="Verdana, Arial, Helvetica, sans-serif">Atoms are made
from positive protons, neutral neutrons, and negative electrons. In most
matter all the positive and negative charges cancel out. However, chairs,
rocks, and even people are still big blobs of electric charge. That's why
everything can get charged and shocked with static electricity. </font>
<p>
<font size="4" face="Verdana, Arial, Helvetica, sans-serif">At the
atomic level the positive parts of one atom can attract to the negative
parts of another atom, causing a weak attraction between the atoms.
However, if the atoms get too close, the dense positive nuclei of each
atom will repel each other. </font>
</p>
<p>
<strong><font face="Verdana, Arial, Helvetica, sans-serif" size="4">Newton's
third law tells us that for every exerted force, there is an equal and
opposite force. Let's take a look to see if this is true at the atomic
level as well.</font></strong><font face="Verdana, Arial, Helvetica, sans-serif" size="4">
</font>
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<font size="4" face="Verdana, Arial, Helvetica, sans-serif">To the right
is a model showing two atoms. If any force is felt by an atom you will see
an arrow (force vector) showing the direction and magnitude of the force.
Use the "slow motion" checkbox to slow things down when you want to get a
closer look at how the forces change over time.</font>
<p>
<strong><font face="Verdana, Arial, Helvetica, sans-serif" size="4">Try
the following:</font> </strong>
</p>
<ul style="list-style-image: url(bullet.gif)">
<li>
<font face="Verdana, Arial, Helvetica, sans-serif" size="4">Run the
model without making any changes.</font>
</li>
<li>
<font face="Verdana, Arial, Helvetica, sans-serif" size="4">Reset the
model and drag the atoms closer together or farther apart before
running the model.</font>
</li>
<li>
<font face="Verdana, Arial, Helvetica, sans-serif" size="4">Reset the
model and change the mass of one or both of the atoms before running
the model.</font>
</li>
<li>
<a href="script:page:0:message dropAtoms.html"><font face="Verdana, Arial, Helvetica, sans-serif" size="4">Put
in lots of atoms</font></a><font face="Verdana, Arial, Helvetica, sans-serif" size="4">
and run the model.<br><br></font>
</li>
</ul>
<table cellpadding="1" align="center" border="0" cellspacing="0">
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<strong>Atom 1 Mass </strong>
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<strong>Atom 2 Mass </strong>
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<div align="center">
<select script4="script:mw:1: stop; select atom all; remove; set %atom0 3; add atom %atom0 (%x1,%y); add atom %atom1 (%x2,%y); select atom none; select textbox all; remove; paint;
script:textbox:5: load bottomBarStop.html;" script3="script:mw:1: stop; select atom all; remove; set %atom0 2; add atom %atom0 (%x1,%y); add atom %atom1 (%x2,%y); select atom none; select textbox all; remove; paint;
script:textbox:5: load bottomBarStop.html;" script2="script:mw:1: stop; select atom all; remove; set %atom0 1; add atom %atom0 (%x1,%y); add atom %atom1 (%x2,%y); select atom none; select textbox all; remove; paint;
script:textbox:5: load bottomBarStop.html;" name="select" script1="script:mw:1: stop; select atom all; remove; set %atom0 0; add atom %atom0 (%x1,%y); add atom %atom1 (%x2,%y); select atom none; select textbox all; remove; paint;
script:textbox:5: load bottomBarStop.html;">
<option value=1>1.0 amu
<option value=2>25.0 amu
<option value=3 selected>50.0 amu
<option value=4>100.0 amu
</select>
</div>
</td>
<td>
<div align="center">
<select script4="script:mw:1: stop; select atom all; remove; set %atom1 3; add atom %atom0 (%x1,%y); add atom %atom1 (%x2,%y); select atom none; select textbox all; remove; paint;
script:textbox:5: load bottomBarStop.html;" script3="script:mw:1: stop; select atom all; remove; set %atom1 2; add atom %atom0 (%x1,%y); add atom %atom1 (%x2,%y); select atom none; select textbox all; remove; paint;
script:textbox:5: load bottomBarStop.html;" script2="script:mw:1: stop; select atom all; remove; set %atom1 1; add atom %atom0 (%x1,%y); add atom %atom1 (%x2,%y); select atom none;select textbox all; remove; paint;
script:textbox:5: load bottomBarStop.html;" script1="script:mw:1: stop; select atom all; remove; set %atom1 0; add atom %atom0 (%x1,%y); add atom %atom1 (%x2,%y); select atom none; select textbox all; remove; paint;
script:textbox:5: load bottomBarStop.html;">
<option value=1>1.0 amu
<option value=2>25.0 amu
<option value=3 selected>50.0 amu
<option value=4>100.0 amu
</select>
</div>
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falseorg.concord.mw2d.activity.AtomContainerpage6$0.mmlfalsefalsetrue110.0org.concord.modeler.PageTextBox410.039.0<html>
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<input name="checkbox" script_selected="script:mw:1:set %slowMode 1;" script_deselected="script:mw:1:set %slowMode 0;" type="checkbox" value="checkbox">
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slow motion collisions
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<td style="padding-left: 10">
<input name="Submit" script="script:mw:1:snapshot" type="submit" value="take a snapshot">
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falseorg.concord.modeler.PageTextBox341.039.0<html>
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<map name="Map">
<area coords="84,11,132,30" shape="rect" href="script:mw:1:run; script:textbox:5:load bottomBarRun.html;"></area>
<area coords="201,9,257,29" shape="rect" href="script:mw:1: stop; select atom all; remove; add atom %atom0 (%x1,%y); add atom %atom1 (%x2,%y); select atom none;select textbox all; remove; paint; script:textbox:5: load bottomBarStop.html;"></area>
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<img height="39" usemap="#Map" src="bottomBarStop.gif" width="341" border="0">
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false110.0org.concord.modeler.ImageQuestion371300<html>
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<strong><font face="Verdana, Arial, Helvetica, sans-serif" size="4">Take a
snapshot of two atoms with the same mass colliding, and then place that
snapshot here.</font></strong>
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falseLineorg.concord.modeler.ImageQuestion371300<html>
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<strong><font face="Verdana, Arial, Helvetica, sans-serif" size="4">Take a
snapshot of two atoms with different masses colliding, and then place that
snapshot here.</font></strong>
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falseLine18.0org.concord.modeler.PageMultipleChoicetrue4371180<html>
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<strong><font face="Arial, Helvetica, sans-serif" size="4">When is there a
significant force between atoms?</font></strong>
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trueonly when the atoms are far enough apartonly when the atoms are close enough togetherthere is always a significant forcethere is never a force shown1-373738Lineorg.concord.modeler.PageTextArea371180<html>
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<strong><font face="Arial, Helvetica, sans-serif" size="4">Do the
snapshots you took illustrate Newton’s third law or not? Explain your
reasoning.</font></strong>
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false110