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WorksheetsChemical balancing
Total questions: 11
Worksheet time: 36mins
Name
Class
Date
1.
What is the part of the chemical equation in green called?
Fe + S --> FeS
Fe + S --> FeS
a)
products
b)
reactants
c)
yield
d)
chemical formula
2.
What is the little number after an element in a chemical equation called.
Example: H2
Example: H2
a)
Coefficient
b)
Subscript
c)
Atom
d)
Equation
3.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO
N2+O2--> _NO
a)
1
b)
2
c)
3
d)
4
4.
Which problem is balanced?
(Check ALL answers)
(Check ALL answers)
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
5.
How many HCl molecules do you need to balance this equation?
Mg + __HCl ---> MgCl2 + H2
Mg + __HCl ---> MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
6.
Is this balanced?
Al + O2 → 2Al2O3
Al + O2 → 2Al2O3
a)
Yes
b)
No
7.
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
a)
2,6,3,2
b)
it's already balanced
c)
4,12,3,4
d)
2,1,4,5
8.
What is the right part of a chemical equation called...
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
9.
Balance the following equation:
___ H2+ ___ O2→___ H2O
a)
1, 1, 3
b)
2, 2, 2
c)
1, 2, 1
d)
2,1, 2
10.
Balance this equation
_N2 + _H2 --> _NH3
_N2 + _H2 --> _NH3
a)
1,2,3
b)
1,3,2
c)
1,1,2
d)
2,1,1
11.
Balance this equation:
P4+O2 --> P2O3
P4+O2 --> P2O3
a)
3 P4+ O2 --> 2 P2O3
b)
P4+ O2 --> 2 P2O3
c)
P4+ 3 O2 --> 2 P2O3
d)
P4+ 2 O2 --> 3 P2O3
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