system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5: why does acetone feel cold even if left out in hotter temperatures?
gpt
It feels cold because it evaporates easily.
When the volatile liquids evaporate into a gas they pull a little heat from whatever surface they are in contact with. As a result when you touch acetone a small amount of it evaporates off stealing heat from your fingertip.