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Naming Molecular Compounds

Published byTerence Lamb Modified over 6 years ago

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Presentation on theme: "Naming Molecular Compounds"— Presentation transcript:

1 Naming Molecular Compounds
Chemical Bonding

2 Lewis Structures - + Nonpolar Covalent - no charges
Polar Covalent - partial charges + -

3 What to know about Covalent Bonds
Covalent molecules are made up of? The electrons are being?

4 How to write names and formulas
Prefix System (binary compounds) How do we recognize these? Because they’re made up of 2 nonmetals? Where are nonmetals found??? Add prefixes to indicate # of atoms. Omit mono- prefix on first element. 3. Change the ending of the second element to -ide.

5 Molecular Nomenclature
PREFIX mono- di- tri- tetra- penta- hexa- hepta- octa- nona- deca- NUMBER

6 Special Rules with Mono-
If there is only one of the first element, then the prefix mono is not used. If there is only one of the second element, then the prefix mono is necessary. Ex. CO – Carbon Monoxide CO2 – Carbon Dioxide C2O – Dicarbon Monoxide

7 Also…. CH2 - Carbon Dihydride N3O6 - Trinitrogen Hexaoxide
There is no simplifying for covalent compounds. What you see is what you get. If you simplify, you would change the chemical formula and ratio of the elements in the bond….Not good…. C2H4 - Dicarbon Tetrahydride CH2 - Carbon Dihydride N3O6 - Trinitrogen Hexaoxide NO2 - Nitrogen Dioxide

8 Writing Names Practice
CCl4  Carbon Tetrachloride Formula Name CF4 H2O NH3 SiO2 PH3

9 Writing Formulas Practice
CCl4  Carbon Tetrachloride Formula Name Nitrogen monoxide Tetraphosphorous pentaoxide Dicarbon Diiodide Trinitrogen Hexoxide Heptachlorine Nonahydride

10 Molecular Nomenclature
The Seven Diatomic Elements Br2 I2 N2 Cl2 H2 O2 F2 H N O F Cl Br I

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