Question

Why does our palm feel cold when we put
some acetone or petrol as Perfume on it?​

Answer 1

Why does our palm feel cold when we put some acetone or petrol as Perfume on it?

Because Acetone, Petrol or Perfume has very low boiling temperature.

When we put some acetone on our palm the particles of it gain energy from our palm & evaporate quickly which causes cooling .

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.