11· 4 subtopics· 4 of 14 chapters live
Each subtopic below is compiled paper by paper: every real Cambridge A Level Chemistry question tagged to it on that paper, laid out on A4 with the mark scheme. Pick the subtopic, then the paper you sit.
11.1 Physical properties of the Group 17 elements11.2 The chemical properties of the halogen elements and the hydrogen halides11.3 Some reactions of the halide ions11.4 The reactions of chlorine