Which type of reaction is characterized by the combination of a metal with a non-metal?

The reaction characterized by the combination of a metal with a non-metal is known as a combination reaction. In this type of reaction, two or more reactants combine to form a single product. Specifically, when a metal reacts with a non-metal, the metal typically donates electrons (acting as a reducing agent), while the non-metal accepts those electrons (acting as an oxidizing agent). This transfer of electrons leads to the formation of ionic bonds, creating a compound composed of ions, such as NaCl when sodium (a metal) combines with chlorine (a non-metal).

Combination reactions are fundamental processes in chemistry, and they often result in the formation of new substances that have properties different from those of the reactants. Understanding this type of reaction helps in predicting the outcomes of various chemical processes involving metals and non-metals.