OCR GCSE COMBINED SCIENCE CHEMISTRY A PAPER 4 2023 (J250/04: Foundation Tier)

OCR GCSE COMBINED SCIENCE CHEMISTRY A PAPER 4 2023 (J250/04: Foundation Tier). DOWNLOAD On www.Hackedexams.com Instantly. 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 C B A Your answer [1] 2 Which process traps heat from the Sun in the Earth’s atmosphere? A Combustion B Displacement C Greenhouse effect D Photosynth...