Types of chemical reaction

Type of reaction	Pattern
Synthesis	A + B   =   AB
Decomposition	AB   =   A + B
Single displacement	A + BC   =   AB + C
Double displacement	AB + CD   =   AD + CB
Complete hydrocarbon combustión	CxHy + O2   =   CO2 + H2O + energy
Combustion of an element	A + O2   =   AO + energy