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Naming Chemicals

Rules for naming chemicals.
by

Nicholas Angell

on 7 January 2014

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Transcript of Naming Chemicals

Chemical Names and Formulas
Naming Ions
"What's in a name? That which we call a rose
By any other name would smell as sweet."
~William Shakespeare
Tetrahydro-4-methyl-2-(2-methylpropenyl)-2H-pyran
The Scent of Roses
The Rules for Ionic Compounds
Cations, or positive ions, aren't changed.
Anions, or negative ions, have the suffix -ide added to them.
Element
Ion
Name
Chlorine
Cl
Chloride
Oxygen
O
Oxide
Sulfur
S
Sulfide
-
2-
2-
Sodium
Na
+
Sodium
Symbol
Name
Cu
Cu
+
2+
Pb
4+
Cr
3+
Copper (I)
Copper (II)
Lead (IV)
Chromium (III)
Write the ions for the following names:
Sodium
Magnesium
Fluoride
Oxide
Iron (II)
Cobalt (III)





Name these ions:
K
I
Al
Fe
Fe
P
+
-
3+
2+
3+
3-
Naming Ionic Compounds
Steps to create names:
Name Cation (+)
Name Anion (-)
KCl
Name of K ?
Name of Cl ?
Name of Compound?
+
-
Try this one on your own:
NaF
Worked by Mr. Angell
MgO
Remember:
If there's a transition metal, you
must
find the charges!
CuO vs Cu O
2
Molecular Compounds
Carbon dioxide CO versus carbon monoxide CO
2
To tell how many atoms of an element there are in a molecule, we use prefixes.
To name a Molecular Compound:
1. The first element is named first, using the elements name.
2. Second element is named as an Anion (suffix "-ide").
3. Prefixes are used to describe the number of atoms.
Exception: "Mono" is not used to name the first element.
What would be the molecular compound name for water?

First, name the hydrogen.
Second, name the oxygen.
H O
2
N O
HI
CF
NH
P O
2
2 5
3
4
We know this charge.
But what about these?
Metals that can have more than one charge need parenthesis.
CuO vs Cu O
2
O
Cu
2+
2-
O
Cu
+
2-
+
Cu
Copper (II) Oxide
Copper (I) Oxide
Vanadium (II)
Vanadium (III)
Vanadium (IV)
Vanadium (V)
Examples:

But why?!
Sources:
Wikipedia
Kent Chemistry
Tagxedo
Full transcript