This is the first comprehensive study guide for Secondary Two Express/Normal (Academic) students based on the latest syllabus by the Singapore Ministry of Education (MOE). Topics covered follow the thematic approach given in MOE's latest syllabus. Conceptualised to provide a holistic learning experience for students, this book also aims to help students understand the various topics, apply the knowledge acquired, as well as excel in their school tests and examinations. Topics not required for Normal (Academic) students are clearly indicated. This book not only complements the Science for Lower Secondary textbooks 2A and 2B, but will also help students to understand and address questions in Activity Books 2A and 2B.