Copper is an element, because it is composed of only one type of atom. A compound consists of two or more elements that are chemically bound together, and a mixture is a physical combination of two or more substances.
Compounds have a uniform composition, while a mixture does not. Water is a compound, because its molecules contain two hydrogen atoms and one oxygen atom. One example of a mixture is brass, which can contain varying quantities of copper and zinc.
The element copper has an atomic number of 29, and it is a metal. It is a member of group 11 on the periodic table. Copper and its alloys are used to make many common items, including water pipes, jewelry, screws and ornamental objects.