If fire is a gas, why is it so. What characteristics of a gas matter does fire have. Figure it out?

Answer 1

fire is a reaction, and generally takes place between gasses or vapors.

the exception is solid and liquid oxidation reactions (such as Liquid Oxygen/FUEL mixtures or fireworks which are solid oxidezers mixed with fuels) however these reactions are generally not considered fire in the traditional sense.

Answer 2

Fire is *not* a gas. It is a chemical reaction that releases energy in the form of light and energy.
Fire uses Oxygen is ganeous form and produces carbon dioxide and water vapor, also in gas form.

It is not an element or matter or a substance.