1. Ionic compounds #2
Criss Cross Method

3. Learning goals
We are learning to determine chemical formulas for ionic compounds using the criss cross method.
We are learning to name binary ionic compounds.

4. 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.

6. Criss cross method!!!!!

7. Example #1 a) Sodium Fluoride b) Magnesium Oxide c) Calcium Chloride
Determine the chemical formula for each compound below.
a) Sodium Fluoride
b) Magnesium Oxide
c) Calcium Chloride

8. Try these
Determine the chemical formula and chemical names of each pair.
Use criss cross method … jump jump
Work with your partner on the white boards!!!
magnesium and chlorine
aluminum and oxygen
lithium and bromine

10. On your own
Please complete p200 #2, 3, 6, 7

11. Transition Metals
The transition metals are found in the middle 10 metallic groups of the periodic table.
These metals are special because they are multivalent.
They can form more than one type of ion.
i.e: Copper (2+ or 1+), Nickel (2+ or 3+) and Iron (3+ or 2+)
We use roman numerals to indicate the type of ion used when naming transition metal ionic compounds.
iron (III) oxide  Fe2O3

12. Example #2 a) Cu2O b) Ni2S3 c) Mn3N4
Provide the chemical name for the following ionic compounds.
a) Cu2O
b) Ni2S3
c) Mn3N4

13. Example #3 a) Copper (II) Chloride b) Titanium (IV) Oxide
Provide the chemical formula for the following ionic compounds.
a) Copper (II) Chloride
b) Titanium (IV) Oxide
c) Cobalt (III) Sulphide

14. Try These
Determine the chemical formula and chemical names of each pair.
Use criss cross method … jump jump
Work with your partner on the white boards!!!
titanium (III) bromide
nickel (II) sulfide
V2O5
AuN

16. On your own
Please complete p200 #4, 9

17. Learning goals
We are learning to determine chemical formulas for ionic compounds using the criss cross method.
We are learning to name binary ionic compounds.