It is a reaction in which multiple reactants combine to form a single product.
Explanation:
A synthesis reaction is one in which a single product is formed by the reaction of multiple reactants.
They are exothermic reactions because they release energy and heat along with the product formed.
In these reactions, the reactants will be more than the products and the product would be more complex than the reactants. They can be represented as A + B ------> AB
Example: Na (Sodium) + Cl (Chloride) ------> NaCl (Sodium Chloride)
