Aluminium is extracted from purified bauxite (Al2O3\text{Al}_2\text{O}_3Al2O3) by electrolysis, but it can also be obtained by recycling aluminium scrap.
Other than conserving finite bauxite reserves, state two distinct environmental or economic advantages of obtaining aluminium by recycling scrap rather than extracting it from bauxite.
110 exam-style questions on Edexcel GCSE Chemistry 5.1 Obtaining and using metals, covering 5.1.1 The reactivity series of metals, 5.1.2 Displacement reactions as redox reactions, 5.1.3 Extracting metals from ores by reduction, 5.1.4 Biological methods of metal extraction, 5.1.5 Resistance to oxidation and recycling metals, and 5.1.6 Life cycle assessment. Each one has a worked solution and a mark scheme showing where the marks go.