Chemistry (B) J258,02 Foundation June 2023, OCR GCSE Past Papers with Mark Schemes

The OCR GCSE Chemistry B (Twenty First Century Science) Depth in Chemistry (Foundation Tier) paper from June 2023 assesses advanced topics including polymerisation, ionic structures, fractional distillation, and the greenhouse effect. It focuses on environmental impact, sustainable fuel usage, and energy changes. Practical skills are tested through experiments involving chromatography, rate of reaction, and heat transfer. Key topics include ammonia synthesis, Dalton’s atomic model, and nanoparticle properties. Analytical reasoning is applied to data interpretation, stoichiometry, and risk assessment. The paper emphasizes problem-solving, experimental design, and sustainability in chemical applications.