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Molecules and Ions
Molecules and Ions
(p. 1)
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by Ed O'Sullivan, Brookfield Academy
All simulations in this activity will begin with a group of atoms of a pure substance in the solid state.
Simulation A: Ionic Compound #1
Although it is often simpler to view models in two dimensions, the real world is three dimensional. A better representation of this ionic substance is shown below. Ionic compounds exist as a three-dimensional array of ions. Click and drag the structure to rotate it.
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<head>
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<body>
<ol>
<li>
<font face="Verdana" size="3">Click Run and observe for about 10
seconds. </font>
</li>
<li>
<font face="Verdana" size="3">With the simulation running, increase
the temperature of the system with the Quick Heat and Cool tool. <b>Heating
will simulate what might occur if the solid were to melt or vaporize</b>.
Heat until the red bar is about 3/4 of the way up the gauge.</font>
</li>
</ol>
</body>
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<head>
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<body>
What types of particles are likely represented in the simulation above
(check all that apply). If you need a hint, click the "Show ionic charges,
if any" button:
</body>
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a neutral atom
a molecule
a cation
an anion
monatomic ion(s)
polyatomic ion(s)
2 3 4
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<html>
<head>
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<body>
Which of the following could possibly be the correct formula for the
substance in the simulator (check all that apply)?
</body>
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<html>CaBr<sub><font size = 3>2</font = 3></sub></html>
<html>K<sub><font size = 3>21</font></sub>Br<sub><font size = 3>21</font></sub></html>
KBr
<html>K<sub><font size = 3>2</font></sub>Br<sub><font size = 3>2</font></sub></html>
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