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Extraction of metals
Explain how the difficulty of extracting metals from their ores is influenced by their position in the reactivity series.
4
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40
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28
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90 min
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CambridgeIGCSECombined ScienceMetals
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Extraction of metals outcomes4 objectives
- Explain how the difficulty of extracting metals from their ores is influenced by their position in the reactivity series.
- Identify that iron is obtained from hematite through the reduction of iron(III) oxide in a blast furnace.
- Recognize that bauxite is the primary ore of aluminium and that aluminium is extracted using electrolysis.
- Detail the process of extracting iron from hematite in a blast furnace, including: (a) the combustion of carbon (coke) to generate heat and form carbon dioxide, (b) the conversion of carbon dioxide to carbon monoxide, and (c) the reduction of iron(III) oxide by carbon monoxide.
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