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Thread: what is fire o.O

  1. #1 what is fire o.O 
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    well can anyone explain? i know that its a chemical reaction but i need a deeper thought


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  3. #2  
    Forum Isotope Zelos's Avatar
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    It is gases that is undergoing chemical reactions giving of light. And the gases comes from the fuel


    I am zelos. Destroyer of planets, exterminator of life, conquerer of worlds. I have come to rule this uiniverse. And there is nothing u pathetic biengs can do to stop me

    On the eighth day Zelos said: 'Let there be darkness,' and the light was never again seen.

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  4. #3  
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    fire is a gas O.o?!?!
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  5. #4  
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    No, it is light given off by the change of the fuel (and the little bit of heat).
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  6. #5 fire 
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    Fire is a chemical reaction as it produces heat, light and cannot be reversed. As it has already been said Fire does indeed produce these things. Fire is the heat reacting with the fuel to create these systoms of a chemical reaction. were somthing like ice melting is a physical reaction because its a change of state.
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  7. #6  
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    It is a chemical reaction which due to it's rapidity of action generates heat, this heat at a high enough temperature produces light.

    Rusting, is technically 'iron on fire' BUT the reaction is so slow that the heat is dissipated before it can produce light.

    I am not a chemist, that may all be bullshit.
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  8. #7  
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    Quote Originally Posted by billco
    It is a chemical reaction which due to it's rapidity of action generates heat, this heat at a high enough temperature produces light.

    Rusting, is technically 'iron on fire' BUT the reaction is so slow that the heat is dissipated before it can produce light.

    I am not a chemist, that may all be bullshit.
    Its right..basically what I was trying to say but yeah...you said it better ^.^ and I know the Rust bit is right.
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  9. #8  
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    Thanx E_L

    You just never know with things learnt 50 years ago whether that damn fellow Hawking has overturned it! :wink:
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  10. #9  
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    Quote Originally Posted by sungmintd8
    No, it is light given off by the change of the fuel (and the little bit of heat).
    of courese it is gases, else it wouldnt behave it like it does

    its gases reacting and giving of light
    I am zelos. Destroyer of planets, exterminator of life, conquerer of worlds. I have come to rule this uiniverse. And there is nothing u pathetic biengs can do to stop me

    On the eighth day Zelos said: 'Let there be darkness,' and the light was never again seen.

    The king of posting
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  11. #10  
    Forum Freshman César's Avatar
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    To define something as a chemical reaction has no sense for me. Things are the products, the reactives or the energy in a chemical reaction.

    To have fire you need: combustible (wood, fuel, propane), comburent (02), a chain reaction and an initial energy source. Imagine that we want to start a bonfire: first we will have to apply some energy (heat) to the wood so that it may combine with the oxygen in the air to start the fire. What we are doing when we apply heat to the wood is provoking that it releases flammable gases, the presence of a source of heat and oxygen will make the redox reaction between these gases and oxygen to start. This reaction is an exothermic one, supplying the energy to maintain the fire.

    This process applies to any combustible (solid, liquid, gas). It is two or more gases (depending on the combustible) which are the components of fire, being the light and heat only phenomena that we perceive as there is a reaction taking place; the same way we percive heat when we are very close to someone and we do not define a living person only for being a source of heat.

    Best regards,

    César
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