1 GCSE Chemistry resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter GCSE SubjectClear filter Chemistry Exam board OCR TopicClear filter C4 Halogens: Group 7 elements Resources Crossword Flashcards Multi-tool Quizsearch C4 Halogens (Group 7) OCR Gateway (9-1) GCSE, Chemistry 16 flashcards Search again