Chapter 7- part II
Ionic Compounds and Naming of Ionic compounds
Resources: Class powerpoint presentation
Textbook sections 7.2 and sections 9.1,9.2,9.5 (naming)
Simulations – Atoms and ions
http://phet.colorado.edu/en/simulations/category/chemistry/general
Samples of Ionic compound and conductivity sticks
Chapter 7 reading and study guide
Prentice Hall review workbook – parts of Units 2 & 6
POGIL: Chemical formulas and Names of Ionic Compounds
Practice problems
Regents ref. Tables E, S and the Periodic Table
7.2
Ionic Bonds and Ionic Compounds
In many coastal countries
that have warm, relatively
dry climates, salt is
produced by the
evaporation of seawater.
You will learn how cations
and anions combine to
form stable compounds
such as sodium chloride.
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7.2
Ionic Bonds and Ionic
Compounds
Formation of Ionic
Compounds
> Formation of Ionic Compounds
Compounds
composed of cations
and anions are called
ionic compounds.
What is the
electrical charge
of an ionic
compound?
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7.2
Ionic Bonds and Ionic
Compounds
Formation of Ionic
Compounds
> Formation of Ionic Compounds
Compounds
composed of cations
and anions are called
ionic compounds.
What is the
electrical charge
of an ionic
compound?
Although they
are composed of ions,
ionic compounds are
electrically neutral.
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7.2
Ionic Bonds and Ionic
Compounds
> Formation of Ionic Compounds
Aluminum metal and
the nonmetal bromine
react to form an ionic
solid, aluminum
bromide.
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7.2
Ionic Bonds and Ionic
Compounds
> Formation of Ionic Compounds
Ionic Bonds
The electrostatic forces that hold ions together in
ionic compounds are called ionic bonds.
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7.2
Ionic Bonds and Ionic
Compounds
> Formation of Ionic Compounds
Formula Units
• A chemical formula shows the kinds and
numbers of atoms in the smallest
representative unit of a substance.
• A formula unit is the lowest whole-number
ratio of ions in an ionic compound.
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7.2
Ionic Bonds and Ionic
Compounds
> Formation of Ionic Compounds
NaCl is the chemical formula for sodium
chloride.
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Conceptual Problem 7.2
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Conceptual Problem 7.2
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Conceptual Problem 7.2
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Conceptual Problem 7.2
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Practice Problems for Conceptual Problem 7.2
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7.2
Ionic Bonds and Ionic
Compounds
> Properties of Ionic Compounds
Properties of Ionic Compounds
What are three properties of ionic
compounds?
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7.2
Ionic Bonds and Ionic
Compounds
> Properties of Ionic Compounds
Most ionic compounds are crystalline
solids at room temperature.
Ionic compounds generally have high
melting points.
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7.2
Ionic Bonds and Ionic
Compounds
> Properties of Ionic Compounds
The orderly arrangement of component ions
produces the beauty of crystalline solids.
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7.2
Ionic Bonds and Ionic
Compounds
> Properties of Ionic Compounds
Ionic compounds can conduct an electric
current when melted or dissolved in water.
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