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Balancing Equations retake Quiz MST
Contributed by: Jones
(Original author: Lawrence)
1.  What is the name of the right side of a 
chemical equation?
a.  Reactants
b.  Yields
c.  Products
2H2 + O2 → 2H2O
2.  What is the name of the left side of a chemical
equation?
a.  Reactants
b.  Yields
c.  Products
2H2 + O2 → 2H2O
3.  How many total atoms in the following equation?

a.  7
b.  31
c.  35
d.  42
C3 H8 + 5O2  → 4H2O + 3CO2
4.  Is this chemical equation balanced?
a.  Yes
b.  No
CH4 + 2O2 → 2CO2 + 2H2O
5.  How do you balance the following equation?
a.  2, 1, 2
b.  1, 1, 1,
c.  2, 3, 1
d.  3, 1, 2
__Fe  + ___Cl2 → ___FeCl2
6.  How do you balance the following equation?
a.  2, 1, 2
b.  2, 2, 1
c.  2, 3, 2
d.  3, 2, 2
___H2 + ___O2 → ___H2O
7.  How do you balance the following equation?
a.  2, 1, 2, 2
b.  2, 2, 1, 1
c.  2, 2, 1, 2
d.  3, 2, 2, 1
___K + ___H2O → __H2 ___KOH 
8.  How do you balance the following equation?
a.  4, 5, 4
b.  5, 4, 1
c.  4, 5, 1
d.  5, 4, 2
___P + ___O2 → ___P4O10
9.  How do you balance the following equation?
a.  2, 1, 2, 1
b.  2, 3, 1, 2
c.  1, 2, 1, 1
d.  1, 2, 2, 1
___Mg + ___HCl→ ___MgCl2 + ___H2
10.  Which of the following is a
rule for balancing equations? 
 a.  you can add of change subscripts 
 b.  you can add or change coefficients
c. you can add or change both subscripts and coefficients 
 d. you can not add or change subscripts or coefficients
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