Inert substance

From Conservapedia - Reading time: 1 min

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An inert substance is an element which does not easily react with other chemicals. Most of the group 8 gases (Argon etc.) in the periodic table are classified as inert, due to their having full outer electron shells. Such substances are useful when working with very reactive substances; for example, reactions that would become uncontrollable in the presence of oxygen can be conducted in an atmosphere of argon.