Why does our palm feel cold when we put some acetone or petrol or perfume on it?
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it is due to the transfer of heat from hot body to cold body when we touch acetone and any cold things heat is transfer from hotter body to colder body....from the law of thermodynamics heat is transfer from hotter body to colder body... thats it...
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Acetone, petrol and perfume are volatile liquids (which can change into vapours easily). When we put some acetone , petrol or perfume on our palm, the acetone, petrol or perfume evaporate rapidly and our palm feels cold. This is due to the fact that to change from the liquid to the vapour state, acetone, petrol or perfume require latent heat of vaporisation. The acetone, petrol or perfume take this latent heat of vaporisation from our palm. The palm loses heat and feels cold.
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