What is the definition of a compound in chemistry?

A compound in chemistry is defined as a substance that consists of more than one type of atom that are chemically bonded together. This means that a compound cannot simply be made up of the same type of atom; rather, it must include different elements that combine in specific ways through chemical bonds. Compounds have distinct properties that are different from the individual elements that compose them.

For instance, water (H2O) is a compound made up of two hydrogen atoms and one oxygen atom. The characteristics of water differ considerably from the properties of hydrogen and oxygen gases. Understanding compounds is fundamental in chemistry as it lays the groundwork for concepts involving chemical reactions, molecular interactions, and the composition of substances.