Topic 1 - Metals and their extraction

COPPER

• Copper is an excellent conductor of heat and electricity and it is also resistant to corrosion. It is also used to make brasses and bronzes. 

IRON

• Iron is used to make steels which are used for constructing bridges, buildings, cars, chemical plant and many everday articles (e.g. screws and nails).

CHROMIUM

• It is a hard metal that resists corrosion. 
• It is used as a decorative and functional coating that protects steel from rusting. 
• Chromium is also a major constituent in stainless steel. 

ALUMINIUM

• It is a great conductor of electricity and is used in electric cables.
• It is strong and has low density…