The exam assesses foundational chemistry concepts, including atomic structure, periodic trends, bonding types, and chemical reactions. Key topics cover isotopes, electron configurations, separation techniques, reaction profiles, and properties of mixtures and compounds. Practical applications involve distillation, chromatography, and electrolysis. Questions focus on calculating yields, energy changes, identifying reactivity series, and evaluating sustainability in industrial processes. Emphasis is placed on interpreting experimental data, balancing equations, and understanding material properties. Keywords: GCSE Chemistry, atomic structure, isotopes, bonding, periodic trends, separation techniques, electrolysis, reaction profiles, material properties, chemical reactions.