Aluminium is the most abundant metal in the Earth’s crust. Iron is next. Iron and aluminium are extracted from their ores in large quantities. The tablebelow summarises the two extraction processes.  Aluminium costs over three times as much per tonne as iron. Suggest two reasons why aluminium is more expensive than iron, even though it is more abundant in the Earth’s crust.

Aluminium is the most abundant metal in the Earth’s crust. Iron is next. Iron and aluminium are extracted from their ores in large quantities. The table below summarises the two extraction processes. Most of the iron produced is converted into steels. Why? 

Aluminium is the most abundant metal in the Earth’s crust. Iron is next. Iron and aluminium are extracted from their ores in large quantities. The tablebelow summarises the two extraction processes.Most of the iron produced is converted into steels. How is this carried out?

Aluminium is the most abundant metal in the Earth’s crust. Iron is next. Iron and aluminium are extracted from their ores in large quantities. The table below summarises the two extraction processes.Both steel and aluminium are recycled. Suggest reasons why it is important to recycle these metals