Combined Science (A) J250,03 Foundation November 2020, OCR GCSE Past Papers with Mark Schemes

The chemistry past paper evaluates fundamental concepts such as chemical reactions, bonding, and stoichiometry. It emphasizes experimental techniques like chromatography, electrolysis, and titrations, as well as data interpretation related to reaction rates and thermal energy changes. Key topics include molecular formulas, reaction profiles, and properties of acids, bases, and salts. Keywords such as “oxidation,“ “covalent bonds,“ “activation energy,“ and “empirical formula“ suggest a focus on both theoretical and applied chemistry. Let me know if you require a more detailed breakdown or analysis of specific sections.