This document provides instructions for classifying various oxides as metal or non-metal oxides and describes the steps to balance chemical equations. Students are asked to identify 14 different compounds as either metal or non-metal oxides. It then gives two examples of balancing equations in two steps: writing the oxidation numbers and crossing/simplifying numbers and subscripts.

1. Metal
Non
Metal
Non
Metal

2. Activity
1. Select the oxides and classify them as a metal and non
metal oxides.
a. Fe2O3
b. H2SO4
c. MgSO4
d. KOH
e. HCl
f. NO
g. CaCl2
h. SnCl4
i. FeO
j. Ca(OH)2
k. HNO3
l. Ca(NO3)2
m. CaF2
n. K3PO4
o. CO

3. OX+ ?
REACTANTS PRODUCTS

4. E.G1

5. O
2
X+ ?
OX
1+ 2-
1º Step. Write the oxidation
numbers of each element

6. OX
21+ -
OX2
2º Step. Cross over the numbers. Simplify the subscripts if it is necessary.

7. ANSWER
O2X+ OX
2

8. E.G2

9. O
2
L + ?
OL
2+ 2-
1º Step. Write the oxidation
numbers of each element

10. OL
22+ -
L 2 2O

11. ANSWER
O2L+ OL