1. Colegio San Patricio
Name ______________________________________________ Date __________
Quiz- Balancing Chemical Equations – TYPE A
1.- What happens in a chemical reaction?
a) atoms are destroyed b) atoms are created
c) atoms are rearranged d) all are correct
2.- A substance that undergoes a chemical change in a reaction is called
a) product b) reactant c) a catalyst d) an enzyme
3.- A chemical equation is balanced by changing or adding
a) subscripts b) reactants c) coefficients d) chemicals
4.- State the law of conservation of mass
5.- Balance the following equations:
a) SnO2 + H2  Sn + H2O
b) SeCl6 + O2  SeO2 + Cl2
c) V2O5 + HCl  VOCl3 + H2O
d) FeO3 + CO  Fe + CO2
BONUS: S + H2SO4  SO2 + H2O
Colegio San Patricio
Name ______________________________________________ Date __________
Quiz- Balancing Chemical Equations – TYPE B
1.- What happens in a chemical reaction?
a) atoms are destroyed b) atoms are created
c) atoms are rearranged d) all are correct
2.- A substance that undergoes a chemical change in a reaction is called
a) product b) reactant c) a catalyst d) an enzyme
3.- A chemical equation is balanced by changing or adding
a) subscripts b) reactants c) coefficients d) chemicals
4.- State the Law of Conservation of mass.
5.- Balance the following equations:
a) H3PO4 + HCl  PCl5 + H2O
b) Au2S3 + H2  Au + H2S
c) HSbCl4 + H2S  Sb2S3 + HCl
d) SiO2 + HF  SiF4 + H2O
BONUS : V2O5 + CCl4  VCl5 + COCl2

2. Colegio San Patricio
Name ______________________________________________ Date __________
Quiz- Balancing Chemical Equations – TYPE C
1.- What happens in a chemical reaction?
a) atoms are destroyed b) atoms are created
c) atoms are rearranged d) all are correct
2.- A substance that undergoes a chemical change in a reaction is called
a) product b) reactant c) a catalyst d) an enzyme
3.- A chemical equation is balanced by changing or adding
a) subscripts b) reactants c) coefficients d) chemicals
4.- State the Law of Conservation of mass.
5.- Balance the following equations:
a) KOH + H3PO4  K3PO4 + H2O
b) NCl3 + H2O  HClO + NH3
c) HSbCl4 + H2S  Sb2S3 + HCl
d) V2O5 + HCl  VOCl3 + H2O
BONUS: CO + H2  C8H18 + H2O
Colegio San Patricio
Name ______________________________________________ Date __________
Quiz- Balancing Chemical Equations- TYPE D
1.- What happens in a chemical reaction?
a) atoms are destroyed b) atoms are created
c) atoms are rearranged d) all are correct
2.- A substance that undergoes a chemical change in a reaction is called
a) product b) reactant c) a catalyst d) an enzyme
3.- A chemical equation is balanced by changing or adding
a) subscripts b) reactants c) coefficients d) chemicals
4.- State the Law of Conservation of mass.
5.- Balance the following equations:
a) SnO2 + H2  Sn + H2O
b) Au2S3 + H2  Au + H2S
c) FeO3 + CO  Fe + CO2
d) V2O5 + HCl  VOCl3 + H2O
BONUS: S + H2SO4  SO2 + H2O