Question

When you pour spirit onto your palm, you feel a cold sensation. This is because of the fact that

• A. spirit is cooler than air
• B. spirit absorbs heat from ones hand's surface and changes its state.
• C. spirit has cooler molecules
• D. our skin is very hot when compared to the spirit

Answer 1

The correct option is B spirit absorbs heat from ones hand's surface and changes its state.

When a material in the liquid state is given energy, it changes its phase from liquid to vapour and the energy absorbed in this process is called heat of vaporization. Spirit absorbs the heat energy from the surface of hands causing it to evaporate, thus we feel a cold sensation.