help me guys
question:- 1) state whether fire is a matter or not . justify your answer
Answers
Matter is anything that has mass and occupies space. The flame itself is a mixture of gases (vaporized fuel, oxygen, carbon dioxide, carbon monoxide, water vapor, and many other things) and so is matter. The light produced by the flame is energy, not matter. The heat produced is also energy, not matter.
Answer:
☞￣ᴥ￣☞ LIGHT IS A PLASMA
It is true that in older days the ancient Greeks and alchemists thought that fire was an element. They also considered earth, air, and water to be elements.
However, the modern definition of anelementdefines itby the number of protonsapure substance possesses. Fire is madeup of many different substances, so it is not an element.For the most part,fire is a mixture of hot gases. Flames are theresultof a chemical reaction, primarily between oxygen in air and a fuel, such as wood or propane. In addition to other products, the reaction producescarbon dioxide, steam, light, and heat. If the flame is hot enough, the gases are ionized and become yetanother state of matter: plasma. Burning a metal, such as magnesium, can ionize the atoms and form plasma.
This type of oxidation is the sourceof the intense light and heat of a plasma torch.While there is a small amount of ionization going on in an ordinary fire, most of the matter in the flame is a gas, so the safest answer for "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.Different Composition for Parts of a FlameThe structure of a flame varies, depending on which part you're looking at.Near the base of the flame, oxygenand fuel vapor mix as unburned gas.
The composition of this part of the flame depends on the fuel that is being used. Above this is the region where the molecules react with each other in the combustion reaction. Again, the reactants and products depend on the nature of the fuel.Above this region, combustion is complete and the products of the chemical reaction may be found. Typically this is water vapor and carbon dioxide. If combustion is incomplete, a fire may also give offtiny solid particles of soot or ash. Additional gases may be released from incomplete combustion, especially of a "dirty" fuel, such as carbon monoxide or sulfur dioxide.While it's difficult to see it, flames expand outward like other gases. In part, this is hard to observe because we only see the portion ofthe flame that is hot enough to emit light.
A flame isn't round (except in space) because the hot gases are less dense than the surrounding air, so they rise up.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 withthe highest energy (hottest part of the flame) is blue and that with the least energy (coolest part of the flame) is more red. The chemistry of the fuel plays its part. This is thebasis for the flame testto identify chemical composition. For example, a blue flame may appear green if a boron-containing salt is present.
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