1. Chapter 9 Chemical Names and Formulas
9.1 Naming Ions
9.2 Naming and Writing Formulas for Ionic
Compounds
9.3 Naming and Writing Formulas for
Molecular Compounds
9.4 Naming and Writing Formulas for Acids and
Bases
9.5 The Laws Governing How Compounds Form
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2. Do Now: Identify the following as ionic or covalent MgS CO2 Cu3N2 NO
CCl4
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3. Naming Molecular Compounds
Look at the list of covalent compounds. What patterns can you find in how they are named?
FORMULA
NAME
NO2
Nitrogen Dioxide
N2O3
Dinitrogen Trioxide
CCl4
Carbon Tetrachloride
Cl2O
Dichlorine Monoxide
S2Cl2
Disulfur Dichloride
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4. Binary Molecular Compounds
Prefixes Used in Naming Binary Molecular Compounds
Prefix
Number
mono- 1
di- 2
tri- 3
tetra- 4
penta- 5
hexa- 6
hepta- 7
octa- 8
nona- 9
deca- 10
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5. Binary Molecular Compounds
Naming binary molecular compounds
Write names of elements in the order listed in formula.
Use prefixes to indicate number of each kind of atom.
- Mono is not used on the first element.
- Vowel at end of prefix is sometimes dropped
End the name of the second element with the suffix -ide.
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6. Name the following Binary Molecular Compounds. N2O PCl3
Sample Problem 9.6
Name the following Binary Molecular Compounds.
N2O
PCl3
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7. Writing Formulas for Binary Molecular Compounds nitrogen trifluoride
Sample Problem 9.7
Writing Formulas for Binary Molecular Compounds
nitrogen trifluoride
disulfur dichloride
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8. END OF 9.3
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