1. Oxidation state bingo

2. Oxidation Bingo You can use a number more than once or not at all.
Draw a grid of 16 squares and write in 16 numbers between -7 and +7 .
You can use a number more than once or not at all.
Remember – some oxidation numbers are more common than others!
Cross off the answers as they appear. When you get all 16 correct....you know the rest!

3. elements not combined with others?
oxygen in compounds -2
A metal which has lost 4 electrons +4
Iron in the compound Iron (III) oxide +3
N in NO3- +5
Mn in MnO4- -7
Nitrogen in ammonia -3
Cl in Cl- -1
Chlorine in ClO3- +5
S in SO42- +6

4. Na in NaCl +1
C in CaCO3 +4
S in SO3 +6
P in PO43- +5
Cr in Cr2O72- +6
V in VO2+ +4
O in H2O2 -1
O in F2O +2
C in SiC (carborundum) -4
I in I3-
-1/3

5. Dissolving