The GCSE Chemistry J248/01 (May 2022) paper evaluates foundational concepts in chemistry, including atomic structure, bonding, and reactions. Section A covers core topics like states of matter, the periodic table, electrolysis, and reaction types. Section B explores practical applications such as chromatography, neutralization, and metal corrosion. Key themes include isotopes, ionic and covalent bonding, and energy changes in reactions. The paper emphasizes analytical skills, data interpretation, and application of theoretical principles in real-world scenarios.