Answer:
There are four types of chemical reactions:
1. Synthesis / Direct Combustion:
These chemical reactions occur where two or more substances react together to form just one product.
2. Decomposition:
Decomposition reactions have just one reactant which breaks up to from two or more simpler products.
3. Single Displacement:
Such types of chemical reactions occur when a more reactive element displaces a less reactive on from a solution its compounds.
4. Double Displacement:
Double displacement chemical reactions involve the exchange of ions between two salts in aqueous solution.