1. Naming Compounds

2. Ionic Compound Formed with a metal and nonmetal Rules for naming:
Write the name of the positively charged ion first. (Usually a metal)
Write the name of the negatively charged ion second. (Usually a nonmetal)
For the second ion, keep the base of the name and replace the ending with “ide”

3. Example of Ionic Compound
NaCl = Sodium Chloride
(chlorine becomes chloride)
2. KI = Potassium Iodide
(Iodine becomes Iodide)
3. MgO = Magnesium Oxide
(Oxygen become oxide)

4. Polyatomic Ion
These are tightly bound groups of atoms that behave as a unit and carry a charge
SEE LIST PROVIDED TO MEMORIZE NAME, FORMULA and CHARGE

5. Naming Compounds with Polyatomic Ions
Write the name of the positively charged ion first. (May be the polyatomic ion)
Write the name of the negatively charged ion second. (May be the polyatomic ion)
If the second ion is not the polyatomic ion, keep the base name and add “ide”.
Wherever the polyatomic ion is found, its name remains as learned.

6. Example of a compound containing a polyatomic ion
NaNO3 = Sodium Nitrate
NH4F = Ammonium Fluoride

7. Naming Acids Acids usually begin with hydrogen Hydrogen and a nonmetal
Ex: HCl
Hydrogen and a nonmetal
Named hydro – (base name of element) – ic acid
HCl
Hydrochloric acid HF
Hydrofluoric acid
HBr
Hydrobromic acid

8. Continuing Naming Acids
If the acid contains a polyatomic ion then….
Polyatomic ions end in –ate
Change to – “ic acid”
Polyatomic ions that end in –ite
Change to – “ous acid”
EX:
H2SO4 Sulfate
Sulfuric acid
H2SO3 Sulfite
Sulfurous acid

9. Naming Bases Most bases end with hydroxide
Name metal then add word “hydroxide”
EX: NaOH
Sodium Hydroxide