Give at least one example from industry where a mixture must be separated in order to obtain the materials that are useful to society.

The answer is; crude oil and iron ore

Iron ore is used to make steel (mainly Fe). However, the raw material contains a mixture of impurities such as  pyrite and apatite that have to be removed. Crude oil also includes a mixture of different hydrocarbon and other impurities. Impurities such as water have to be removed and the hydrocarbon distilled to separate them.

convalent bond :

is a chemical bond formed by the sharing of electron between 2 atoms.

it is the direct chemical bond between 2 atoms.

in bond formation atoms are involved here.

electrovalent bond:

is a chemical bond defined as electroststic attraction between 2 atoms.

it is the electrostatic attraction between 2 atoms.

in bond formation, ions are involved here.

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explanation:

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