Synthesis Reaction

A synthesis reaction or direct combination reaction is one of the most common types of chemical reactions. In a synthesis reaction two or more chemical species combine to form a more complex product.

A + B → AB

The combination of iron and sulfur to form iron (II) sulfide is an example of a synthesis reaction:

8 Fe + S₈ → 8 FeS

Another example of a synthesis reaction is the formation of potassium chloride from potassium and chlorine gas:

2K_(s) + Cl_2(g) → 2KCl_(s)