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9.6 Extraction of metals

Syllabus
0620–2026–2027
Topic
9.6
Level
—

9.6.1—Ease in obtaining metals from their

  • Describe ease in obtaining metals from their ores, related to the position of the metal in the reactivity series

9.6.2—Iron extraction from hematite in a

  • Describe iron extraction from hematite in a blast furnace: coke burns for heat/CO2; CO2 is reduced to CO; CO reduces iron(III) oxide; limestone decomposes to calcium oxide; slag forms. Symbol equations not required

9.6.3—Main ore of aluminium is bauxite and

  • State: the main ore of aluminium is bauxite and that aluminium is extracted by electrolysis

9.6.4—Symbol equations for the extraction of

  • State the symbol equations for the extraction of iron from hematite (a) C + O2 → CO2 (b) C + CO2 → 2CO (c) Fe 2O3 + 3CO → 2Fe + 3CO2 (d) CaCO 3 → CaO + CO2 (e) CaO + SiO2 → CaSiO3

9.6.5—Aluminium extraction from purified

  • Describe aluminium extraction from purified bauxite/aluminium oxide: role of cryolite, why carbon anodes are replaced, and electrode reactions with ionic half-equations. Bauxite purification not required

Objective notes

5 learning objectives
ConceptIGCSE Chemistry