so right here i actually have combustion, this is actually methane, and you know, methane is a fuel because it used to make a moter powered on methane, right there, its a hydrocarbon, most fuels that we use are hydrocarbons, most fuels that we use are hydrocarbons which just means carbons , bonded in a bunch of different ways to hydrogens and if you add enough heat for the reaction to happen, so its activation energy if we put it in there with some oxygen around, its going to combust, its going to produce carbon dioxide and water, and i didnt put it here, and even more heat than ou put into it so this is an endothermic reaction, it produces more heat than you put into it and ill do a lot more on that in future videos, about endothermic and exothermic reactions, but anyway, we care about the oxidation and the reduction, so lets see if anyone is getting oxidized or anyone is getting reduced here, so, lets