Combined Science (B) J260,06 Higher June 2018

The OCR GCSE Combined Science B J260/06 June 2018 paper (Higher Tier) assesses knowledge in Chemistry. Topics include halogen reactivity, catalytic converters, water properties, electrolysis of aluminium oxide, and the Haber Process. Questions involve chemical equations, particle models, chromatography, and reaction conditions. Analysis of Period 3 elements highlights bonding and melting points, while comparisons between diamond and graphite cover structure and properties. Acid strength and pH are explored through practical methods and theoretical explanations. Total marks: 95. Duration: 1 hour 45 minutes.