Because the metal reacts with oxygen at high temperatures it cannot be produced by reduction of its dioxide.

The pure metal is very reactive, and will react with other elements like oxygen.

He told me oxidation is when a metal reacts to oxygen.

Do not use aluminum fasteners because this metal may react with the chemical in the wood.

Okay I mean the question on the paper might well be, What happens when a metal reacts with an acid.

The alkali metals, such as sodium, react with a bang.

Technically, it means anything that is not made of metal, since all metals react to some degree with heated liquids.

This is because these three metals react quickly and noticeably with foods, especially those high in acid.

Most metals are chemically stable, and do not react easily.

The metals react faster with water than with oxygen and thereby more energy is released.