CHEM 238 GCSE COMBINED SCIENCE: TRILOGY 8464/C/1H Chemistry Paper 1H Qp 2020
Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature I declare this is my own work. GCSE COMBINED SCIENCE: TRILOGY Higher Tier Chemistry Paper 1H H 2 *02* IB/M/Jun20/8464/C/1H 0 1 This question is about the extraction of aluminium. 0 1 . 1 An aluminium atom is represented as: Al 13 27 Give the number of electrons and neutrons in the aluminium atom. [2 marks] Number of electrons Number of neutrons Aluminium is extracted by the electrolysis of a molten mixture of aluminium oxide and cryolite. Figure 1 shows the cell used for the electrolysis. Figure 1 0 1 . 2 Aluminium is produced by the reduction of aluminium oxide (Al2O3). What is meant by the term reduction?
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chem 238 gcse combined science trilogy 8464c1h chemistry paper 1h qp 2020