Why does our palm feel cold when we put some acetone, petrol or perfume on it?
Why does our palm feel cold when we put some acetone, petrol or perfume on it?
When it happens to you, you are actually experiencing phenomena called “Evaporative Cooling” .
Petrol is mainly having Butane & Propane. Other higher molecular weight compounds also but to a lesser extent.
Butane, Propane, Acetone & perfume (i.e., Alcohol) are highly volatile. They need small amount of heat to get into vapor phase.
Our body heat is more than sufficient to cause this vaporization. Now, obviously heat from your palm is getting consumed so you’ll feel cooling effect there.
Or
it converts into vapour at a fast rate. this increases the liquid molecules around it in vapour phase thus our palm feel cold. 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 and evaporate quickly which causes cooling .
When it happens to you, you are actually experiencing phenomena called “Evaporative Cooling” .
Petrol is mainly having Butane & Propane. Other higher molecular weight compounds also but to a lesser extent.
Butane, Propane, Acetone & perfume (i.e., Alcohol) are highly volatile. They need small amount of heat to get into vapor phase.
Our body heat is more than sufficient to cause this vaporization. Now, obviously heat from your palm is getting consumed so you’ll feel cooling effect there.
Or
it converts into vapour at a fast rate. this increases the liquid molecules around it in vapour phase thus our palm feel cold. 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 and evaporate quickly which causes cooling .
