1. Ionic bonding Day #2

2. Learning goals We are learning to identify ionic compounds.
We are learning to name ionic compounds.
We are learning to write chemical formulas for ionic compounds.

3. Recall An ionic bond occurs between a metal and a non-metal.
The metals lose electrons to become cations.
The non-metals gain electrons to become anions.
The resulting compound is held together electrostatically.
The overall charge of an ionic compound is zero.

4. Example #1 Mg2+ O2- Ca2+ Cl- Na+ F- Mg2O2 CaCl2 MgO NaF
Determine the chemical formula for each compound below.
a) Sodium Fluoride
b) Magnesium Oxide
c) Calcium Chloride
Step #1: Write the ions
Mg2+
O2-
Ca2+
Cl-
Na+ F-
Step #2: Criss-Cross Charges
Mg2O2
CaCl2
Step #3: Write the Formula
& reduce (if necessary)
MgO
NaF

5. Try this Name the following ionic compounds: a) NaBr b) LiF c) MgBr2
d) AlI3
e) K2S
f) AL2O3

6. Try this
Use the criss-cross method to determine the chemical formula and name of the following:
a) lithium and fluorine
b) beryllium and fluorine
c) magnesium and sulfur
d) aluminum and oxygen
e) hydrogen and phosphorus

7. Learning goals We are learning to identify ionic compounds.
We are learning to name ionic compounds.
We are learning to write chemical formulas for ionic compounds.