Chemical Reactions

5 types of reactions: Combination/Synthesis Decomposition Combustion Single Displacement Double Displacement

A combination reaction occurs when two or more reactants combine to form a single product. A + B  C Examples: Na + Cl2  NaCl Na2O + H2O  NaOH

A Decomposition reaction occurs when a single reactant breaks down (decomposes) into two or more products. A  B + C Examples: H2O  H2 + O2 H2CO3  H2O + CO2

A single displacement reaction occurs when a single, more reactive element or group replaces a less reactive element or group. A + BC  AC + B Examples: Zn + CuSO4  ZnSO4 + Cu Al + HCl  AlCl3 + H2

Practice Mg + Fe2O3  Fe + MgO Single Displacement

Practice PbSO4  PbSO3 + O2 Decomposition

Practice NH3 + I2  N2I6 + H2 Single Displacement

Practice H2O + SO3  H2SO4 Combination