What is the state of matter of fire πŸ”₯?


  Fire is the rapid oxidation of a material in the
exothermic chemical process of combustion, releasing heat, light, and various reaction
   Typically, fire comes from a chemical reaction between oxygen in the atmosphere and some sort of fuel(wood or gasoline for example). Of course, wood and gasoline don't spontaneously catch on fire just because they're surrounded by oxygen. For the combustion reaction to happen, you have to heat the fuel to its ignition temperature.

Fire is hot because the conversion of the weak
double bond in molecular oxygen, O2 , to the stronger bonds in the combustion products
carbon dioxide and water releases energy (418 kJ per 32 g of O 2); the bond energies of the fuel play only a minor role here. At a certain point in the combustion reaction, called the ignition point, flames are produced. The flame is the visible portion of the fire. Flames consist primarily of carbon dioxide, water vapor, oxygen and nitrogen. If hot enough, the gases may become ionized to produce plasma. Depending on the substances alight, and any impurities outside, the color of the flame and the fire's intensity will be different.

      Fire is made up of many different substances, so it is not an element. For the most part, fire is a mixture of hot gases. Flames are the result of a chemical reaction, primarily between oxygen in the air and a fuel, such as wood or propane. In addition to other products, the reaction produces carbon dioxide , steam, light, and heat . If the flame is hot enough, the gases are ionized and become yet another state of matter : plasma. Burning a metal, such as magnesium, can ionize the atoms and form plasma. This type of oxidation is the source of the intense light and heat of a plasma torch.
Most of the matter in flame is a gas, so the safest answer to "what is the state of matter of fire?" is to say it's a gas. Or, you can say it's mostly gas, with a smaller amount of plasma.

The color of the flame is an indication of its temperature and also the chemical composition of the fuel. A flame emits incandescent light, where light with the highest energy (hottest part of the flame) is blue, and that with the least energy (coolest part of the flame) is redder. The chemistry of the fuel plays its part. This is the basis for the flame test to identify chemical composition. For example, a blue flame may appear green if a boron-containing salt is present.


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