 I think one of the highest bits of redox is getting the terminology correct. So we're going to start by looking at an oxidant. So if substances gain electrons easily that means that they cause oxidation and that's the loss of electrons. So something that gains electrons is reduced but it causes oxidation. So because it's causing oxidation it's called an oxidant which is a portmanteau of oxidizing agent. So an oxidant gains electrons easily and causes oxidation but it itself is reduced. So a substance that causes oxidation is easily reduced. Conversely something that is easily oxidized loses electrons easily so because it's losing electrons easily it causes reduction. So by losing electrons it causes reduction because reduction is the gain of electrons. So a reductant which again is a portmanteau of reducing agent. A reductant loses its electrons easily it causes reduction but it itself is oxidized. So something causes reduction it is being oxidized. Let's look at an example down here. Down here we've got iron being oxidized to iron two ions and we have copper two ions being reduced to solid copper. So iron is being oxidized it is losing two electrons to become iron two plus iron two plus iron. The copper ions are gaining two electrons here to become solid copper. So the copper ions are being reduced to copper. So therefore because the iron is being oxidized to iron ions it is causing the reduction by losing its electrons that are gained by the copper is losing its electrons and therefore the copper is being reduced. So it is a reducing agent because it is causing the reduction of the copper ions. So iron is a reductant. The copper ions are gaining electrons they are being reduced and because they are being reduced they are gaining the electrons that are given off from the iron, so because they are being reduced, they're causing the oxidation of the iron. So the copper ions are in oxidants because they're causing the oxidation of the iron to the iron ions.