Redox by oxygen transfer
Redox by oxygen transfer
Oxidation is the gain of oxygen, while reduction is the loss of oxygen. These changes always happen together, so the overall reaction is called redox.
Step-by-step lessons on CIE IGCSE Chemistry Redox. Each one builds up to exam-style questions. Build a solid grasp of atomic structure, bonding and the mole concept early, since these underpin almost every other topic, then move on to the more calculation-heavy quantitative and organic chemistry content.