2. Learn the Criss-Cross Method

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Presentation transcript:

2. Learn the Criss-Cross Method The Point of Today: 1. Name Ionic Compounds 2. Learn the Criss-Cross Method

Ionic Compounds are composed of a metal and a non-metal Metals = Positive (+) Charge Non-Metals = Negative Charge (-) Ionic Compounds

Ionic = Metal + Non-Metal Binary Ionic = Group 1A or 2A Metal (alkali & alkaline-earth metals) and any Non- Metal Metal name is the same, Non-Metal changes to an “ide” ending. Use the Criss-Cross Method Binary Ionic Compounds

Binary Ionic Compounds Group 1A and 2A Non-Metals Binary Ionic Compounds

Charges +4 or -4 +1 +2 +3 -3 -2 -1

Calcium Chlorine Ca Cl Calcium Chloride CaCl2 -1 Criss-Cross Method +2 Element Name +2 -1 Charge Ca Cl Element Symbol CaCl2 Formula Compound Name Calcium Chloride Criss-Cross Method

Aluminum Chlorine +3 -1 Al Cl AlCl3 Aluminum Chloride Let's Practice!

Lithium Nitrogen +1 -3 Li N Li3N Lithium Nitride Let's Practice!

Barium Phosphorus +2 -3 Ba P Ba3P2 Barium Phosphide Let's Practice!

Take out the Formula Mania Worksheet! Try #1

AlN Al3N3 +3 -3 Al N Aluminum Nitride Aluminum Nitrogen +3 -3 Al N AlN Al3N3 Aluminum Nitride Let's Practice!

Formula Mania Worksheet Al +3 Aluminum N -3 Nitride Ratio of the Charges!

1st Metals, then Non-Metals

Formula Mania Worksheet Lithium Li+1 N -3 Nitride Lithium Li+1 Lithium Li+1 Ratio of the Charges!

2. Learn the Criss-Cross Method The Point of Today: 1. Name Ionic Compounds 2. Learn the Criss-Cross Method

Independent Practice Now that you have practiced Binary Ionic Compounds, it is time to try this on your own! Complete the “Formula Mania” worksheet!