Exam (elaborations)
OCR 2023 GCSE Combined Science Chemistry A Gateway Science J250/04: Paper 4 (Foundation Tier) Question Paper & Mark Scheme (Merged)
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2 © OCR 2023 Section A You should spend a maximum of 20 minutes on this section. Write your answer to each question in the box provided. 1 Which part of the Periodic Table contains the most reactive metals? D A C B Your answer [1] 2 Which process traps heat from the Sun in the Earth’s...
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