Exam (elaborations)
Paper 1 June 2023 Chemistry- AS level OCR Breadth in Chemistry Paper 1 June 2023 (Mark Scheme)
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Potable water Any two from: Distillation Water evaporated/boiled (Water vapour) then condensed OR Any two from: Membrane filtration Salty water forced through membrane at high pressure Water molecules pass but dissolved salts don’t To kill micro-organisms/bac...
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