Does gravity have an affect on Fire?

Yes. Look up experiments of fire in space.

Yes, but not as much as air.

Yes.

Fire goes up because cooler particles are denser and this is influenced by gravity. Fire will naturally seek space that is unoccupied.

If you are talking about a campfire type,
the thermal energy makes gravity negligible even though gravity is there.

Actually, it does. Fire in zero gravity behaves very differently than it does on Earth.

Yes, since less dense gases will rise and more dense gases will fall, causing the usual shape of a flame. Yet in free fall (in orbit) flames are spherical.

Sun ☀️


Nuff said

I suppose if you’re taking into account the atmospheric pressure that allows those molecules to form.

No, except that as fire consumes things above, they tend to fall down

Oxygen wise...yes.