UTF-8
TELS Phases of Matter (Mar06)
204255204
What does a gas look like at the atomic scale?
Where have the atoms traveled?
As each model runs, follow one particle for a time. Repeat for different particles.
<Previous><Index><Next>
8.0
1
8.0
8.0
1
8.0
org.concord.modeler.text.LineIcon4010105<html><body>
<table width="100%" align="center">
<tr>
<td align="center">
<b><font size="5" face="Trebuchet MS">Gases</font></b>
</td>
</tr>
</table>
</body></html>-b973747575
Trebuchet MS
8.0
1
8.0
org.concord.modeler.text.LineIcon40101010<html><body face="Trebuchet MS">
<table width="100%">
<tr>
<td width="50">
<a href="page1.cml"><img src="previous.png" border="0"></a>
</td>
<td width="50">
<a href="index.cml"><img src="index.png" border="0"></a>
</td>
<td width="50">
<a href="page3.cml"><img src="next.png" border="0"></a>
</td>
<td>
<table width="90%">
<tr>
<td width="40%" bgcolor="#f4d0b7">
Page 2 of 10
</td>
<td bgcolor="#fcf3ed">
</td>
</tr>
</table>
</td>
</tr>
</table>
</body>
</html>-6b393a7575
11
8.0
1
8.0
14
8.0
8.0
true14
true16
14
8.0
28.0
14
146 50 50
8.0
1
28.0
org.concord.modeler.PageTextBox
300.0
270.0
<html>
<head>
</head>
<body>
<p>
<font face="verdana,arial,helvetica">Below are models of three kinds of
gases. </font>
</p>
<p>
<font face="verdana,arial,helvetica">One is a gas of atoms, one is a gas
of molecules (steam, water in gas form), and one is a mix of atoms and
molecules. </font>
</p>
<p>
<font face="verdana,arial,helvetica">Run the models and watch them
carefully. </font>
</p>
<p>
<font face="verdana,arial,helvetica">The dashed lines represent atom
pairs that are close enough to attract each other.</font>
</p>
</body>
</html>
-40c36
Lowered Bevel
org.concord.modeler.PageTextBox
340.0
260.0
<html>
<head>
</head>
<body>
<img src="color_jumping_people_sm.jpg">
</body>
</html>
-330034
6 50 50
8.0
8.0
1
org.concord.mw2d.activity.AtomContainer
page2$0.mmlfalse
1
1
org.concord.modeler.PageRadioButton
Helium
A gas of atoms
true
org.concord.mw2d.models.MolecularModel
0
1183941194632
Execute MW script
org.concord.modeler.PageRadioButton
Steam
Water as a gas
org.concord.mw2d.models.MolecularModel
0
1183941194632
Execute MW script
org.concord.modeler.PageRadioButton
Mix
org.concord.mw2d.models.MolecularModel
0
1183941194632
Execute MW script
14
org.concord.modeler.PageCheckBox
Show Forces
Dotted lines represent forces that exist between neighbors
true
org.concord.mw2d.models.MolecularModel
0
Show van der Waals interactions
1
org.concord.modeler.PageTextField
West
550
24
<html>
Stop the helium model and estimate how many dashed lines there are per atom.
</html>
One or two.
org.concord.modeler.PageTextArea
500
100
<html>
What is similar about the arrangement of all gas atoms and molecules?
</html>
They are randomly placed and far apart.
true
org.concord.modeler.PageTextArea
500
100
<html>
Describe the motion of atoms and molecules in a gas.
</html>
They travel far and randomly.
org.concord.modeler.PageTextArea
500
100
<html>
How can you identify atoms in a model that are part of a gas?
</html>
They are uniformly and randomly distributed.
1
14255 0 0
1
14
1
14
page1.cml14
14
index.cml14
14
page3.cml14
14
14255 255 255