Well I wouldn’t say warm, i’d say hot! After all, we generally use combustion of chemicals for heating purposes. Different chemicals release different amounts of heast when combusted and this is known as the enthalpy of combustion. As a good rule of thumb, the more carbon atoms, the more heat will be released during combustion.
Yes… You can measure the temperature of the fire by looking at the atoms and molecules produced by it. A typical blue flame in a gas cooker will be over at 2000 degrees. The yellow smoky flame is a lot cooler but still enough to burn you!
Fire is most definitely warm (if you ever burn yourself on a fire, trust me, you’d know about it!). You can get some fires, especially metal based ones, that can get up to really high temperatures. It is also possible for a whole coal mine to burn on fire for years – google a place called Centralia in the USA, where a fire has been burning since 1962 and has caused whole towns to be evacuated permanently!
Fire is an indication of a combustion reaction happening. Combustion occurs when a fuel combines with oxygen to produce carbon dioxide, water, and LOTS of ENERGY (an exothermic reaction). This means that lots of energy (in the form of heat and light) is given out, which is why fire is warm (or hot).
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