1. Naming Chemical Compounds
Ionic Compounds
&
Molecular Compounds

2. Types of Ions Cations and Anions
Monatomic-meaning one element represented Ex. Cl-1 Na+1
Cations are named for the element
Anions are named with an –ide ending
Polyatomic- meaning more than one element represented Ex. OH-1 NH3 -1
Polyatomics are named for the ion

3. Ionic Compounds Monatomic cations Mono means 1
Cations are + metal ions
Remember

4. Ionic Compounds Monatomic anions Mono means 1
Anions are – non-metal ions

5. Ionic Compounds Polyatomic ions Poly- means many or more than one
These are two or more atoms bonded together with an overall charge
Most polyatomic ions are negative

6. Writing Binary Ionic Compound
Use the criss-cross method.
Take the charge Number of the cation and make it the subscript on the anion and vice versa
ALWAYS REDUCE
Al O-2  Al2O3
Aluminum Ion + Oxide Ion  Aluminum Oxide

7. Practice Potassium iodide KI Magnesium phosphate Mg3(PO4)2
Strontium sulfide
SrS