Redox Reactions Explained with Animations

Redox reactions are a fundamental concept in chemistry that involve the transfer of electrons.Redox reactions are chemical reactions that involve the transfer of electrons between two chemical species.In redox reactions, one substance loses electrons in a process called oxidation.While another substance gains those electrons in a process called reduction.These processes always occur simultaneously - you can't have oxidation without reduction.The key to identifying redox reactions is tracking changes in oxidation states of elements.Let's look at a common example: iron rusting. The chemical equation is four iron atoms plus three oxygen molecules yields two iron oxide molecules.In this reaction, iron is oxidized from an oxidation state of zero to plus three, as it loses three electrons.Meanwhile, oxygen is reduced from an oxidation state of zero to minus two, as it gains electrons.This electron transfer is the fundamental mechanism behind many important processes.These include batteries, corrosion processes like rusting, combustion reactions, and many biological processes like cellular respiration.