1 GCSE resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter GCSE Subject Chemistry Exam board OCR TopicClear filter Atoms Chemical patterns and reactivity series Electrolysis Group 1 - Alkalis Group 7 - Halogens Ionic Bonding The Periodic Table Resources Document OCR Chemistry C4 GCSE, Chemistry Document 5.0 / 5 Search again