We now know what an oxidation state or and oxidation number is and what it means when things are oxidized or reduced and lets see how that actually happens in reactions so what we're going to study is this video is oxidation/reduction reactions and all that is a reaction where somebody is being oxidized, which means electroons are being taken away from them, and someone's being reduced, which means they are being handed electrons or they are taking electrons away from someone else, and sometimes this has been termed, because you have the red in reduction and you have the ox in oxidation an they switch them around and they call i it a redox reaction, and it sounds like a very fancy chemistry term but it just means a reaction where something is getting oxidized and if something is getting oxidized, something else is getting reduced, so lets study a bunch of them. 