Chemical Reactions: Understanding the 5 Types
Synthesis Reactions
Explanation: In a synthesis reaction, also known as combination or composition, all reactants are added together to form one compound.
Example: A + B â AB
Decomposition Reactions
Explanation: Decomposition reactions start with one reactant, which then breaks down into two or more products.
Example: ABC â AB + C
Single Replacement Reactions
Explanation: In single replacement, or single displacement, a single element is present on both the reactant and product side. Positive charges may trade places.
Example: AB + C â CB + A
Double Replacement Reactions
Explanation: Double replacement reactions involve two compounds producing two new compounds. Positive charges trade places between the compounds.
Example: AB + CD â AD + CB
Complete Combustion Reactions
Explanation: Complete combustion reactions involve a hydrocarbon combining with oxygen to produce carbon dioxide and water.
Example: CHâ + Oâ â COâ + HâO
To balance it: CHâ + 2Oâ â COâ + 2HâO