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 = Metal + Non-MetalBinary Ionic = Group 1A or 2A Metal (alkali & alkaline-earth metals) and any Non- Metal

Use the Criss-Cross Method

Metal name is the same, Non-Metal changes to an “ide” ending.

Group 1A and 2A Non-MetalsBinary Ionic Compounds

+1+2 +3 -3 -2 -1

0+4 or -4

Calcium ChlorineElement Name

+2 -1Charge

Ca ClElement Symbol

Compound Name Calcium Chloride

CaCl2Formula

Aluminum Chlorine

+3 -1

Al Cl

Aluminum Chloride

AlCl3

Lithium Nitrogen

+1 -3

Li N

Li3NLithium Nitride

Barium Phosphorus

+2 -3

Ba P

Ba3P2

Barium Phosphide

N a m e : _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ P e r i o d : _ _ _ _ _ _ _ _ _ _

F o r t h i s a c t i v i t y , y o u w i l l u s e t h e c r i s s - c r o s s t o d e t e r m i n e t h e c o r r e c t f o r m u l a a sw e l l a s t h e c o r r e c t c h e m i c a l n a m e . N e x t t o y o u r w o r k , c u t o u t a n d t a p e t h e c o r r e c t r a t i oo f t h e e l e m e n t s s y m b o l c a r d s o n y o u r w o r k s h e e t .

1 . A l u m i n u m a n d N i t r o g e n

2 . S o d i u m a n d C h l o r i n e

3 . S o d i u m a n d N i t r o g e n

4 . C a l c i u m a n d O x y g e n

5 . A l u m i n u m a n d C h l o r i n e

6 . A l u m i n u m a n d O x y g e n

7 . S o d i u m a n d O x y g e n

8 . C a l c i u m a n d N i t r o g e n

9 . C a l c i u m a n d C h l o r i n e

Take out the

Formula Mania

Worksheet!

Try #1

Aluminum Nitrogen

+3 -3

Al N

Al3N3

Aluminum Nitride

AlNAlN

Aluminum Nitrogen

+3 -3

Aluminum NitrideAlNAlN

Al N

Al +3

Aluminum

N -3N -3

NitrideNitride

Ratio of the Charges!Ratio of the Charges!

N a m e : _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ P e r i o d : _ _ _ _ _ _ _ _ _ _

F o r t h i s a c t i v i t y , y o u w i l l u s e t h e c r i s s - c r o s s t o d e t e r m i n e t h e c o r r e c t f o r m u l a a sw e l l a s t h e c o r r e c t c h e m i c a l n a m e . N e x t t o y o u r w o r k , c u t o u t a n d t a p e t h e c o r r e c t r a t i oo f t h e e l e m e n t s s y m b o l c a r d s o n y o u r w o r k s h e e t .

1 . A l u m i n u m a n d N i t r o g e n

2 . S o d i u m a n d C h l o r i n e

3 . S o d i u m a n d N i t r o g e n

4 . C a l c i u m a n d O x y g e n

5 . A l u m i n u m a n d C h l o r i n e

6 . A l u m i n u m a n d O x y g e n

7 . S o d i u m a n d O x y g e n

8 . C a l c i u m a n d N i t r o g e n

9 . C a l c i u m a n d C h l o r i n e

1st Metals, then Non-Metals

Lithium Nitrogen

+1 -3

Li N

Li3NLithium Nitride

N -3N -3

NitrideNitride

Lithium

Li+1

Lithium

Li+1

Lithium

Li+1

Ratio of the Charges!Ratio of the Charges!

1. Name Ionic Compounds

2. Learn the Criss-Cross Method

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