Category:Reactions

Reactions in chemistry are the interaction taken place when a set of chemical substance to another it may be either spontaneus when there is no need for energy or any other input or not when it does require. It can also release some energy or absorbs in energy. For example fire is the change of oxygen and a fuel into an oxide/oxides and maybe some other chemicals this usually relies on heat maybe a spark ,some other fire or just high enough temperature. This reaction is exothermic meaning it releases heat.