WorksheetsEQUATIONSTEST
Total questions: 26
Worksheet time: 2hrs 38mins
Fe + O2 -> Fe2O3
2H2 + O2 --> 2H2O
What is the number before a chemical formula called?
Ex: 2H2 + O2 --> 2H2O
Coefficient
Subscript
Atom
Equation
_Al +_HCl --> _H2 +_AlCl3
__P4 + __O2 --> __P2O3
When the equation H2O2 --> H2O + O2 is completely balanced, the coefficient for water is
5
8
3
2
When the equation NH3 + O2 --> NO + H2O is completely balanced using smallest whole numbers, the coefficient of O2 would be
2
3
4
5
Balance this equation, AlCl3 + NaOH → Al(OH)3 + NaCl and identify the correct coefficients from the given choices.
3,1,3,1
1,3,3,1
1,1,1,3
1,3,1,3
Balance the following equation: Cr + Fe(NO3)2 → Fe + Cr(NO3)3 and identify the correct coefficients from the given list.
2,3,3,2
2,3,2,3
4,6,6,2
1,3,3,1
PCl5 + ___ H2O → ___ HCl + H3PO4
4, 5
1, 6
3, 8
2,2
_SnO2 +_H2-->_Sn +_H2O
Which problem is balanced?
SO2 + 2H2--> H2SO4
SO2 + H20 --> H2SO4
2Na + 2H2O --> 2NaOH + H2
2Na + 2H2O --> 2NaOH + H
Balance the following equation:
___ SeCl6+ ___ O2→___ SeO2+____Cl2
1, 1, 1, 3
2, 1, 2, 1
1, 2, 1, 2
2, 2, 2, 4
NaHCO3 --> Na2CO3 + H2O + CO2
Balanced this equation:
Sb2S3 + O2 ---> Sb + SO2
It is balanced.
Sb2S3 + O2 ---> 2Sb + SO2
Sb2S3 + 3O2 ---> 2Sb + 3SO2
3Sb2S3 + 3O2 ---> 2Sb + SO2
2C2H2 + 5O2 --> 4CO2 + 2H2O
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
2,6,3,2
it's already balanced
4,12,3,4
2,1,4,5
Balance this equation
_ C6H6 +_O2 --> _ CO2 +_ H2O
2,6,3,2
it's already balanced
2,15,12,,6
2,12,12,6
Balance this equation
_C3H6 +_O2 --> _CO2 + _ H2O
2,6,3,2
it's already balanced
4,9,3,6
2,9,6,6
Balance this equation
_C2H5OH + _O2 --> _ CO2 + _ H2O
2,6,3,2
1,3,2,3
4,12,3,4
2,1,4,5
Balance this equation
_Fe +_H2O--> _Fe3O4 + _ H2
2,6,3,2
it's already balanced
3,4,1,4
2,1,4,5
Balance this equation
_KClO3 --> _ KCl + _O2
2,6,3,
it's already balanced
4,,3,4
2,2,3
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