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why the fire is hot?

Fire is hot because thermal energy (heat) is released when chemical bonds are broken and formed during a combustion reaction. Combustion turns fuel and oxygen into carbon dioxide and water.  

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fire is hot because  it has methane compound present and takes oxygen for combustion  so gives thermal energy {heat} .
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because thermal enery is released when chemical bonds are broken and formed during combustion reaction
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Fire is hot because thermal energy (heat) is released when chemical bonds are broken and formed during a combustion reaction. Combustion turns fuel and oxygen into carbon dioxide and water.
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as wax is a hydrocarbon on igniting it,it  gives carbon dioxide,water and heat energy alongwith light energy 
This is why fire is hot. 
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Fire is hot because thermal energy (heat) is released when chemical bonds are broken and formed during a combustion reaction. Combustion turns fuel and oxygen into carbon dioxide and water
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