the act of competing; rivalry for supremacy, a prize, etc.: The competition between the two teams was bitter. a contest for some prize, honor, or advantage: Both girls entered the competition. the rivalry offered by a competitor: The small merchant gets powerful competition from the chain stores.
A: 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 ... Full Answer >
At the basic level, the nucleus of an atom is made up of protons and neutrons. At the more fundamental level, the nucleus of an atom is made up of quarks and other sub-subatomic particles, such as leptons and gauge bosons. Two down quarks and one up quark make up a neutron, while one down quark and two up quarks make up a proton.