1 IGCSE Chemistry resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter IGCSE SubjectClear filter Chemistry Exam board Edexcel TopicClear filter Acids, bases and salts Atoms and compounds Everything on the specification for Double Award Chemistry Structure and bonding Testing and analysing substances Resources Document NOTES ON ALL TOPICS (Quick notes) IGCSE, Chemistry Document Search again