Assumed prior knowledge The Reactivity Series Rust forms on iron and steel as a result of a redox reaction between iron and oxygen. 2.15 - 2.20 Loss and gain Oxidation and redu... https://www.mychem.co.uk/index.php/igcse-chemistry/inorganic-chemistry/reactivity-series OCR Enter your text here ... EDEXCEL AQA Enter your text here ... Oxi...