Iron is made from iron ore
Iron
is made from iron ore, a common material found all over the world. Iron iscombined with carbon and a small amount of other chemical elements. Then it is
heated to make steel. This is more durable than pure iron.
It
may surprise you to know that glass is made of sand. In a glass work, sand is mixed with other
substances, and heated until it melts. As it cools it becomes thicker, and can
be molded or blown into shape before it hardens to form glass. Metal containing
compounds can be added to make colored glass.
