Hi all
If I introduce energy to a substance in order to start a fire I understand that the energy causes atoms to break free of their current molecules and then bond with oxygen atoms, causing molecules like CO2.
What I don't understand though is where the energy comes from to continue this process, causing the chain reaction. A finite amount of energy is introduced initially, as far as I know there is no energy lost from the atoms in the form of electrons etc as they bond, but energy is certainly lost in the form of radiated heat and light. So considering so much energy is escaping from the fire where does the energy come from which sustains the fire as long as there is enough fuel + oxygen?
Thanks