Can anyone tell me what exactly determines whether an element or compound is flammable or not?

i know electons play a role in this

essentially everything is flammable, but it has to do with the elements overall stability. but I’m going to be late for work so if it’s not already answered by the time I come back I’ll give you the long answer.

Just took chem, but can’t remember
Umm.. I think, if it’s not too stable, and the inter-molecular forces are weak enough, then enough friction can cause it to light up ?

This smelleth heartily of homework.

Apply fire and see what happens.

ok I’m back from work…

Flash points and vapor pressure is what makes certain substances flammable….
The higher the vapor pressure, the more flammable vapor is involved…
With that in hand, the flash point is the lowest temperature in which there can be enough flammable vapour to ignite.

Fire is an oxidation-reduction reaction. Almost all redox reactions require the presence of oxygen, but some do work without it.

You’ll need to meet the activation energy of the reactants to initiate the reaction. Oftentimes, once this energy level is met, the reaction will give of enough heat to sustain itself for a bit.

You’ll also need the reactants. With your basic wood fire, your reactants are the hydrocarbons in the wood and oxygen. In a thermite reaction, your reactants are aluminum and iron (III) oxide. Whatever the case, you need an oxidizing agent and a reducing agent.

Hope it Helps
Boobs

good answer ABoyNamedBoobs03, you help me with my dilemma