Question

The compounds of metals which occur in the earth’s crust and are obtained by mining are called ______ and the ______ from which a metal can be extracted profitably are called ______.

Answer 1

The compounds of metals which occur in the earth’s crust and are obtained by mining are called minerals and the minerals from which a metal can be extracted profitably are called ores.

Explanation:

Minerals are natural compounds containing metals found in the earth’s crust. Only those minerals which contain enough of the metal to allow profitable extraction are called ores. Hence, all ores are minerals, but not all minerals are ores.