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Some fires are blue for the same reason any fire has the colors it has, because the electrons in it's d-orbital, (an orbital is where/with what patern the electrons are orbiting an atom's nucelus, the d-orbital is were the transition metals valence electrons are) become exited and jump around to a different orbital.
It is also d hotest.
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SteveFlames are blue because of the molecules that are produced during combustion. CH and C2 radicals give off light in the green to blue region of the visible spectrum (~435 nm for CH, and 470 & 515 nm for C2). The color can change if something other than a carbon based gas and air are burnt. For instance, a hydrogen-oxygen flame will give off light in the ultra-violet region. Addition of metals will also influence the color of the flame; such as, sodium creating a yellow flame, or copper a green flame. Finally, the temperature of the flame will give some change to the color, but in this case the light comes from hot soot particles rather than chemical reactions. For a cool flame the soot will give the flame a orange-red color, while a hot flame gives a yellow or whitish appearance. For more information on this look at Plank radiation, or Black Body emission.
A blue flame is a fire caused by gas. ( If you ever have one, water doesn't work when you trow it on a gas fire.)
The colour of the radiant energy of any reacting atom is determined by the quantum levels that electrons fall between. In natural gas the blue colour comes from the hydrogen atoms. The n=0 and n=1 levels of the balmer series produces an energy radiation equivalent to the blue colour.
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True or false fire will not burn without oxygen?
True, fire must have oxygen to burn.
How does fabric react to fire?
It will burn very quick.
What temp does a fireplace burn at?
The temp at which a fire burns. :)
What are the negative effects of fire?
Fire for one consumes oxygen and burns flammable items. They can burn down whole forests and everything! They can burn things not meant to be burned like plastic releasing toxic fumes into the air. It can burn animals and people too.
Does blue fire mean it's the hottest or coldest or electric?
Blue light is of a higher energy than red light. That means that the fire with the blue light is hotter, as the fire must generally be hotter to generate the blue light. For example, in a gas flame, the blue, which is hottest, is in the middle, and any yellow, orange or red is around the outside.
