Guillermo Davies Ore asked:
What is the composition of fire?
Chris - Fire looks like a solid thing but itís not. Itís actually just vapour. When you heat something up to a high temperature it shoves out chemicals which are volatile and flammable. They mix with oxygen which is coming from the air around them. They combust so they react with the oxygen and they burn releasing heat. They also produce some degradation products or burning products from combustion. When you make that it glows. Itís incandescent and it gives out light at different wavelengths and different chemicals make different coloured lights. Thatís why flames have different colours. Sodiumís very common and that makes flames an orange colour. If you have incomplete combustion. If you have some sooty particles in the smoke or the vapour theyíll glow orange as well. This is why you then see this orange pattern.
Guillermo Davies asked the Naked Scientists: Is fire any kind of matter? If so, which state of matter is it in, plasma, gas? What do you think? Guillermo Davies, Sun, 27th Jul 2008
Fire is more of a 'process' than a substance, I should say.
Technically a plasma is any ionised gas (subject to being shouted at by physicists) so a candle flame is a dilute plasma. A decent meter will let you demonstrate that a candle flame conducts electricity. Not many of the molecules get ionised, but some do.
Why do you hate me so?
Of course, I love you dearly. But my love of scientific truth tends to win out. Bored chemist, Thu, 31st Jul 2008
] lightarrow, Fri, 1st Aug 2008
That's true - particularly around the outside. lyner, Fri, 1st Aug 2008
Why are you fighting? Someone tell what actually is fire. Does it have mass? Can it be made to occupy fixed shape? Why does it flutter? Why is it pointed at top? If it is a reaction, what are the reactants and products? If it were a process, I believe it shouldn't have been such a physical thing which could be seen. If it is a matter, it should be within three states. And Mr. Plasma, I request you to clear your concept as Mr. Process did. Pramod Kandel, Sun, 31st Jan 2010
Fire is the physical manifestation of an incorporeal reality or the spirit of Yahweh. That is the reason it can't be defined under matter as the other elements are and there has to be three (3) conditions in order to invoke fire. This is showing that the creator Yahweh is a 3-fold unity being the Father, The Word and Holy Spirit. At no point in time will you get Yahweh without the 3-fold unity just like there can't be fire without those 3 conditions present which are the fuel, oxygen and heat. Anthony Williams \"Bocetti\", Fri, 5th Mar 2010
http://www.youtube.com/watch?v=Oc4D3m05Hes&playnext=1&list=PL512787F5D8869660 Mr. Data, Wed, 29th Jun 2011
Let's keep it Science please guys! imatfaal, Wed, 29th Jun 2011
Sorry - it's fairly simple; Fire is not just infrared light. (fire gives off infrared amongst other things). You might want to google convection, conduction and radiation as heat transfer methods. On the campfire example - this is one of the reasons it is much hotter downwind of a campfire than upwind. imatfaal, Wed, 29th Jun 2011
ch4 + o2= co2 + h2o. @ the = sign the flame exists. Is there a difference in the mass on the left side of the = sign from the right side ? ASSUME THE EQUATION IS PROPERLY BALANCED,sorry. CZARCAR, Wed, 29th Jun 2011
In fact, o2 is a molecular construction is it not? We need the fundamental answer, which I have given. Atomic was not even close, and molecular physics is even further from the fundamental answer. Mr. Data, Wed, 29th Jun 2011
The most familiar form of fire -- orange, yellow, or white flame -- is due to orange, yellow, or white hot sooty particles. It is a solid aerosol, and not really a gas or a plasma.
It says someone has posted.... I don't see this poster's post? Mr. Data, Wed, 29th Jun 2011
I am not talking bollocks. I admitted fire was a process, but I proclaimed the state of matter was of infrared-type: This is what was questioned, and now I am threatened by another member without all the relevent facts. Well, let us leave it at then. I know when I am not welcome.... (even though I contributed to the physics)! Mr. Data, Wed, 29th Jun 2011
well then how do you explain St. Elmo's Fire? It doesn't have the process of combustion as you say.
" I proclaimed the state of matter was of infrared-type"
i think, fire has no absolute chemical composition just like electricity. to create fire, you do not need to follow some chemical rules like creating water which you can easily say as H2O.
nice link Bored Chemist.. but your youtube link doesn't explain in detail how fire works...nice dancing though... Dr. Junix, Thu, 7th Jul 2011
What is fire made of....? Fire as you see it (energy in the form of light)? Or, what is comprised resulting in fire? 4 components are required for fire to exist (together)...... heat, fuel, oxygen (air), and a chemical chain reaction. In that order...... It was formerly known as the fire triangle, but fire tetrahedron is the proper term as the fourth element being the chain reaction is what enables, and sustains fire buy maintaining heat which seperates gasses from the fuel source and so on. mlarsen77, Fri, 8th Jul 2011
I do not have a degree......didnt even finish college......but I know fire is not made of light...... Light is a form of energy released by the chemical chain reaction. mlarsen77, Fri, 8th Jul 2011
What is the composition of fire?
the atoms may glow as the electrons jump shells but radiance is radiance & it has no mass? CZARCAR, Mon, 11th Jul 2011
no.. fire has no mass.. same as electricity.. you cannot measure the it's mass.. Dr. Junix, Mon, 11th Jul 2011