1 of 27 © Boardworks Ltd 2006 2 of 27 © Boardworks Ltd 2006 How are metals extracted? Metal extraction is a large and important industry. What positive and negative impacts…

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version 1.0 General Certificate of Secondary Education Chemistry Specimen Papers and Mark Schemes AQA GCSE Chemistry (4421) Copyright © 2005. AQA and its licensors. All…

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