Chemguide

Chemguide is an educational website created to help students understand chemistry, with extensive learning materials aimed particularly at advanced-level learners and teachers. It also has a developing section for students aged 14–16, including those following GCSE courses. Its content is organized by subject and examination syllabus, with support for Cambridge International A level and UK AS/A level chemistry, as well as Pearson Edexcel International GCSE Chemistry textbooks.

The site covers atomic structure and bonding, inorganic chemistry, physical chemistry, instrumental analysis, and organic chemistry. Topics range from electronic structures, periodic trends, redox and electrolysis to energetics, reaction rates, equilibria, spectroscopy, chromatography, organic properties, and reaction mechanisms. Chemguide also provides chemistry calculations material, including information about the author’s book, and suggestions for textbooks and revision guides. Additional resources include syllabus download guidance, selected external links, answers to frequently raised questions, and a contact address for reporting difficulties. Written by Jim Clark, Chemguide offers structured explanations intended to make challenging chemistry concepts more accessible to learners.