Page 63 - The Periodic Table Book

Uses

Nuts and bolts This steel body
resists rusting. Tractor
Chrysler Building, New York City, USA

This fastener is Transition Metals
made of strong steel.

Steel wool structures are
These tall
Thin wires of steel
are used to clean made from stiff
steel girders.
hard surfaces.
Cast iron pot

Stainless steel is quite
resistant to rain and wind.

A steel blade stays
sharp longer than a
blade of another alloy This iron pot retains
or metal because of heat well while cooking.
the iron in it. Transmission towers
Sickle
SMELTING
These small grains Pure iron is separated
of pure iron are 1. Iron ore and
magnetic and are coal are added from its ores in a process
attracted to the end to the furnace. called smelting. During
of a magnet. this process, iron reacts
with carbon in coal at a
high temperature. As the
2. Hot air is mixture burns, the carbon
added here to raise
the temperature. takes the impurities out
of the ore, leaving behind
Iron filings and magnet 3. Impurities float 4. Pure iron sinks to the
a layer of pure iron.
on the pure metal,
then released.
bottom, then removed.

our cells produce energy for the body to work). tiny amounts of carbon and other metals, such as
Foods containing iron include meats and green nickel and titanium, are added to it. This forms an
vegetables, such as spinach. When pure iron alloy called steel, which is used to make bolts and
comes into contact with air and water, it develops strong tractor bodies, among other applications.
a flaky, reddish-brown coating called rust, which Adding the element chromium to steel creates
weakens the metal. In order to make iron tougher, a stronger alloy called stainless steel. 61

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