I am not satisfied with the answer I got from my father. Fire, Smoke & Ashes: Would you describe each of these as a solid, liquid or gas? These 3 particular things do not seem to fit in to any category.
by 
ChandaDiane - est. 1975
ANSWERS: 4
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Fire is just radiation energy. It emits everywhere but where you see the fire that is the source of the visible energy emitted. Fire is neither solid liquid or gas Smoke is merely very spaced out solid molecules that are so spaced out then they become lighter than air and raise. Ashes are the carbon remains from the reaction called combustion which forms products of carbon dioxide and water vapor that rise from the air. Ashes are almost always solid and normally are composed of free form carbon molecules.
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Fire effectively does not fit in any of the 3. So let's call it the fourth state Smoke I would consider it a gas. Ashes are solid,you can touch them and they are not liquid
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Fire could be classified as gaseous, same as smoke. "Fires start when a flammable and/or a combustible material with an adequate supply of oxygen or another oxidizer is subjected to enough heat and is able to sustain a chain reaction. This is commonly called the fire tetrahedron. No fire can exist without all of these elements being in place. Flaming fires involve the chemical oxidation of a fuel (combustion or release of energy) with associated flame, heat, and light. The flame itself occurs within a region of gas where intense exothermic reactions are taking place. An exothermic reaction is a chemical reaction whereby heat and energy are released as a substance changes to a more stable chemical form (in the case of fire, usually generating carbon dioxide and water). As chemical reactions occur within the fuel being burned, light and heat are released. The visible flame has little mass, and IT IS COMPRISED OF LUMINOUS GASES which emit energy (photons) as part of the oxidation process." http://en.wikipedia.org/wiki/Fire Ashes are the remaining solids of the combustible material.
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Fire is burning gasses, Smoke is particles (solids) suspended in the air, ashes are solids.
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