Question

why does our Palm feel cold when you put some acetone or Petrol or perfume on it..

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Answer 1

Acetone or petrol or perfume have low boiling point . So when it is touched by our Palm it evaporates and take all the heat of palm and give coolness to our palm ......

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Answer 2

Answer:

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.