The exam assesses advanced chemistry concepts, including atomic structure, bonding, reaction energy, electrolysis, rates of reaction, and chemical calculations. Key topics include isotopes, intermolecular forces, the periodic table, reactivity series, displacement reactions, and endothermic and exothermic processes. Practical applications involve calculating relative atomic mass, percentage atom economy, molar concentrations, and interpreting experimental data. Questions emphasize sustainability, industrial processes like electrolysis and the Haber process, and evaluating environmental impacts. Keywords: GCSE Chemistry, atomic structure, bonding, electrolysis, reaction energy, periodic table, reactivity, industrial processes, sustainability, chemical calculations.