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Page 1 - Dissolving explanation
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org.concord.modeler.text.LineIcon600.01503007515<html><center><br><br><font size="8">An Introduction to Solutions</font><br>
<font size=6"><b>Bonding Review</b></font> <br>
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<title>UNIT: Ths Solution Process</title>
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An important concept to understand in this unit is the ability to
distinguish between types of substances. We will be discussing two main
types: ionic and molecular. This model contains at least one example of
each. An ionic compound is represented in the top container and is shown
as charged atoms, known as ions. Note that all of the blue ions carry a
positive (+) charge and all of the green atoms carry a negative (-)
charge. The bottom two containers represent two different types of
molecular substances. Molecules are held together by covalent bonds
resulting from the sharing of electrons. Note that the container to the
lower left contains molecules that show no charge. These are known as
nonpolar covalent molecules and result from a bond in which the atoms
involved have a relatively equal attraction for the bonding electrons. The
container on the lower right contains polar covalent molecules. In this
type of interaction, one of the bonding atoms has a greater attraction for
the electrons, so the electrons are shared unequally resulting in a charge
separation known as a dipole moment. <strong>On the last page of this worksheet you will be creating a report that will document your answers to the questions.</strong>
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Pg 1 Dissolving explanation$0.mmlfalsefalse
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To run the simulations in this multipage worksheet, the controls at the
bottom of model work much like the controls on a DVD player. Run this
simulation and observe the interactions betwen the particles within each
container. Answer the following questions as a review of material
previously covered in the Bonding Unit. Understanding the interactions we
studied in the Bonding Unit will be necessary in order to comprehend the
solution process.
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1. Which of the following is true?
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Metals form cations which are - and nonmetals form anions which are +
Metals form cations which are + and nonmetals form anions which are -
Metals form anions which are - and nonmetals form cations which are +
Nonmetals form cations which are - and metals form anions which are +
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2. Covalent bonds occur between...
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Two nonmetals in which the electrons are shared equally.
Two nonmetals in which the electrons are shared unequally.
A metal and a nonmetal.
Both A and B are correct.
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3. What is a dipole moment and what do they result from?
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4. Does water have a dipole moment? Explain why or why not.
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5. Give an example of each of the following compounds: Ionic, Nonpolar
Covalent, Polar Covalent
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