Question

If the back of your hand is moistened with alcohol it rapidly becomes dry. Why it is that while it is drying. Why does it feel cool

Answer 1

alcohol needs a very low heat energy to become steam. Thus it changes its state rapidly. As it absorbs heat energy from our palm, we feel cool
 

Answer 2

Answer:

The alcohol on our hand absorbs its latent heat of vaporisation from the surface of our hands and evaporates. Drawing heat and therefore, cooling our hand in the process.