Two or more substances combining to form one product

A single substance breaking down to form two or more products

When one element replaces another in a compound forming a new compound

Two compounds react causing the cations and anions to switch places. Forms two new compounds/products.

Almost always involving heat. Produces Carbon Dioxide and Water. Always involves Oxygen.

CH4 + 2O2 ---> CO2 + 2H2O

AB + CD ---> AD + CB

A + BC ---> B + AC

AB --- A + B

A + B ---> AB

NaClO3 --> NaCl + O2

KOH --> K2O + H2O

LiCl + O2 ---> LiClO3

Na2O + CO2 ---> Na2CO3

Pb(NO3)2 + K2S --> PbS + KNO3

Al(NO3)3 + H2SO4 --> Al2(SO4)3 + HNO3

ZnS + O2 --> ZnO + S

K + H2O --> KOH + H2

C7H6O + O2 --> CO2 + H2O

H2C2O4 + O2 --> CO2 + H2O