Part of the Edexcel GCSE Combined Science curriculum.
Edexcel GCSE Combined Science Topic 3 Chemical Changes is a step-by-step online learn guide for GCSE students in Years 10 and 11, mapped to the Edexcel specification (Pearson Edexcel GCSE (9–1) Combined Science (1SC0) – Topic 3 Chemical changes). It covers acids, alkalis and pH, reactions of acids, neutralisation and the pH core practical, making soluble salts, solubility and insoluble salts, electrolysis of molten compounds and electrolysis of solutions and purifying copper, then brings it all together with mixed retrieval and exam practice.
There are 23 short steps of about 15 minutes (roughly 6 hours of learning), each made of bite-size explanations with key words, tables and examples, and every bite-size is followed by an activity you check straight away. Key terms include Acid, Alkali, Base, Salt, Neutralisation, Ionic equation, Filtrate, Crystallisation, Soluble, Insoluble, Electrolyte and Electrolysis.
