Question

What do you mean by the term ore?

Answer 1

Ore: An ore is a mineral from which the metals can be extracted at a low cost and with minimum effort.

For example, the common ore of aluminum is Bauxite $({\mathrm{Al}}_2{\mathrm{O}}_3.2{\mathrm{H}}_2\mathrm{O})$ from which aluminum $\left(\mathrm{Al}\right)$ can be extracted.