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 >
The atom is made from a central nucleus with electrons around the outside. The electrons have a negative charge and very little mass. Most of the mass of the atom is concentrated in the nucleus, which has a positive charge. The positive charge in the nucleus is balanced by the negative electrons, making an atom neutral.