Quotation from: General Science

Written by: Bertha M. Clark


The tendency of iron to rust lessens its efficiency and value, and
many devices have been introduced to prevent rusting. A coating of
paint or varnish is sometimes applied to iron in order to prevent
contact with air. The galvanizing of iron is another attempt to secure
the same result; in this process iron is dipped into molten zinc,
thereby acquiring a coating of zinc, and forming what is known as
galvanized iron. Zinc does not combine with oxygen under ordinary
circumstances, and hence galvanized iron is immune from rust.

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