Eli5: If fire is not plasma, what is it?

Question

Just read somewhere that fire is unique to earth, I don’t understand

In: Chemistry

Answer 1

Fire isn’t plasma because fire isn’t a substance. Fire, the process of organic compounds reacting with oxygen to form CO2 and H2O, is just that: a process. An event. An occurrence. When I fry a steak, is that process solid, liquid, or gas? It’s kind of hard to answer, right? A process can’t have a state of matter.