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__**5 Types of Reactions**__ Synthesis

Decomposition

Combustion

Single Displacement

Double Displacement

The five kinds of reactions are synthesis, decomposition, combustion, single displacement, and double displacement. Synthesis, which is probably the easiest to understand. is when two elements come together to form one compound or molecule. Decomposition is when one molecule or compound breaks down into two elements or two molecules. Combustion is when an element containing Carbon or Hydrogen heats with with O2 and forms H2O or CO2.Single displacement is when two compounds react and a stronger metal from one the reactants replaces the other metal in the compound. Double displacement is when two metals switch places with each other.