Chromium is industrially extracted from chromium(III) oxide (Cr2O3Cr_2O_3Cr2O3) by heating it with aluminium powder in a highly exothermic thermite reaction. In this process, the chromium(III) oxide loses oxygen to form chromium metal.
State the specific chemical term used to describe a reaction in which a compound loses oxygen.
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.