Page 71 - The Periodic Table Book

Uses ELECTROPLATING

Copper wire A thin layer of copper can be added to metal,
usually iron, to stop it from corroding easily.
This process is called electroplating.

Electrons flow from
the positive to the
Computer
Giant electromagnet
negative electrode.
motherboard
This positive
electrode is made Transition Metals
Copper coating on steel of copper and
slows down corrosion. slowly dissolves This electrode
in the liquid.
is made of iron.
Electroplated nails contains dissolved a protective coating
Copper ions form
This solution
over the metal.
copper ions.
Massive crane-mounted
gives it a metallic shine.
electromagnets contain A copper glaze on the vase
huge coils of copper wire.
Brass trumpet

The brass tube contains
air that vibrates to produce
musical sounds.

This tough alloy Bronze helmet Copper-glazed vase
does not weaken
over time.
Statue of Liberty,
New York City, USA

A verdigris
layer protects
pure copper
from additional
weathering.

Pure copper
Copper electrical wires
can be stretched to
form long wires.

be magnetic as and when they are needed. They Statue of Liberty. Copper is often mixed with
can be much more powerful than normal magnets other metals to produce tougher alloys. Bronze, a
and can lift heavy objects. Pure copper does not copper-tin alloy, is more durable than pure copper
rust, but it reacts with air over time to form a layer and has been used since ancient times. Brass, a
of grey-green copper carbonate called verdigris. copper-zinc alloy, is used in musical instruments,
This can be seen on copper statues, such as the such as trumpets. 69

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