Download H2O Mg + O2 MgO Zn + HCl ZnCl2 + H2 P + O2 Fe + Cl2 FeCl3

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Name ___________________________________ Date _______________ Per ______
Balancing Chemical Equations
Directions: In this exercise you will balance chemical equations of each element by following three
simple steps:
STEP 1 - Count the number of atoms on both the reactants and products sides of the equation.
STEP 2 - Using coefficients, balance the number of atoms.
STEP 3 – Check your work by counting the number of atoms on each side of the equation.
1. Unbalanced equation:
H2 + O2
H 2O
Balanced equation:
2. Unbalanced equation:
Mg + O2
MgO
Balanced equation:
3. Unbalanced equation:
Zn + HCl
ZnCl2 +
Balanced equation:
4. Unbalanced equation:
P +
O2
P4O10
Balanced equation:
5. Unbalanced equation:
Balanced equation:
Fe +
Cl2
FeCl3
H2
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