Question

why does our palm feel cold when we put some acetone or petrol or perfume on it ​

Answer 1

$\huge\bold\star\red{QUESTION}\star$

why does our palm feel cold when we put some acetone or petrol or perfume on it

$\huge\bold\star\red{ANSWER}\star$

When we put some acetone or petrol or perfume on our palm, it evaporates. During evaporation, particles of the liquid absorb energy from the surface of the palm to compensate for the loss of energy, making the surroundings cool. The acetone, petrol or perfume take this latent heat of vaporisation from our palm.

Answer 2

Answer:

$\huge\underbrace\mathscr\color{lime}{ †\: QueStion:–}$

Why does our palm feel cold when we put some acetone or petrol or perfume on iit?

$\huge\underbrace\mathscr\color{aqua}{ †\: Answer:–}$

Acetone, petrol and perfume are low boiling liquids. When they're poured on palm, they evaporate readily and for this change of state, they take the energy from our palm and we get a cooling sensation.

$\huge\underbrace\mathscr\color{red}{ †\: Explaination:–}$

Acetone, petrol, perfume etc., being volatile, evaporate very fast when exposed to larger surfaces. When we put some acetone or petrol or perfume on our palm, it evaporates. During evaporation, particles of the liquid absorb energy from the surface of the palm to compensate for the loss of energy, making the surroundings cool. The acetone, petrol or perfume take this latent heat of vaporisation from our palm. The palm loses heat and feels cold.