OCR GCSE 9-1 21st Century Science Chemistry B QUIZ on Topic C6 "Making useful chemicals" (Higher Tier)

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Quiz on selected aspects of OCR Twenty First Century GCSE 9-1 Chemistry B Chapter C6 "Making useful chemicals": reactions of acids, making salts, rates of reaction - experiments and factors - concentration, temperature, pressure, enzymes, catalysts, manufacture of ammonia (Haber synthesis), ammonium salts (Higher Tier)