Colegio San PatricioName ______________________________________________ Date __________

Quiz- Balancing Chemical Equations – TYPE A

1.- What happens in a chemical reaction?a) atoms are destroyed b) atoms are createdc) atoms are rearranged d) all are correct

2.- A substance that undergoes a chemical change in a reaction is calleda) product b) reactant c) a catalyst d) an enzyme

3.- A chemical equation is balanced by changing or addinga) subscripts b) reactants c) coefficients d) chemicals

4.- State the law of conservation of mass

5.- Balance the following equations:a) SnO2 + H2 Sn + H2Ob) SeCl6 + O2 SeO2 + Cl2

c) V2O5 + HCl VOCl3 + H2Od) FeO3 + CO Fe + CO2

BONUS: S + H2SO4 SO2 + H2O

Colegio San PatricioName ______________________________________________ Date __________

Quiz- Balancing Chemical Equations – TYPE B

1.- What happens in a chemical reaction?a) atoms are destroyed b) atoms are createdc) atoms are rearranged d) all are correct

2.- A substance that undergoes a chemical change in a reaction is calleda) product b) reactant c) a catalyst d) an enzyme

3.- A chemical equation is balanced by changing or addinga) subscripts b) reactants c) coefficients d) chemicals

4.- State the Law of Conservation of mass.

5.- Balance the following equations:a) H3PO4 + HCl PCl5 + H2Ob) Au2S3 + H2 Au + H2Sc) HSbCl4 + H2S Sb2S3 + HCld) SiO2 + HF SiF4 + H2O

BONUS : V2O5 + CCl4 VCl5 + COCl2

Colegio San PatricioName ______________________________________________ Date __________

Quiz- Balancing Chemical Equations – TYPE C

1.- What happens in a chemical reaction?a) atoms are destroyed b) atoms are createdc) atoms are rearranged d) all are correct

2.- A substance that undergoes a chemical change in a reaction is calleda) product b) reactant c) a catalyst d) an enzyme

3.- A chemical equation is balanced by changing or addinga) subscripts b) reactants c) coefficients d) chemicals

4.- State the Law of Conservation of mass.

5.- Balance the following equations:a) KOH + H3PO4 K3PO4 + H2Ob) NCl3 + H2O HClO + NH3

c) HSbCl4 + H2S Sb2S3 + HCld) V2O5 + HCl VOCl3 + H2O

BONUS: CO + H2 C8H18 + H2O

Colegio San PatricioName ______________________________________________ Date __________

Quiz- Balancing Chemical Equations- TYPE D

1.- What happens in a chemical reaction?a) atoms are destroyed b) atoms are createdc) atoms are rearranged d) all are correct

2.- A substance that undergoes a chemical change in a reaction is calleda) product b) reactant c) a catalyst d) an enzyme

3.- A chemical equation is balanced by changing or addinga) subscripts b) reactants c) coefficients d) chemicals

4.- State the Law of Conservation of mass.

5.- Balance the following equations:a) SnO2 + H2 Sn + H2Ob) Au2S3 + H2 Au + H2Sc) FeO3 + CO Fe + CO2

d) V2O5 + HCl VOCl3 + H2O

BONUS: S + H2SO4 SO2 + H2O