system
Given the following post, respond as if you're commenting on Reddit:
human
What happens if you freeze one water molecule? 

I know that water molecules arrange themselves into a hexagonal pattern when they freeze, but is there any change within a single molecule?
gpt
States of matter, gas liquid and solid, are by definition a model for how atoms and molecules interact with each other at an atomic level to give rise to macroscopic properties.

Hence, it would be impossible to 'freeze' one molecule. The molecule would vibrate less vigorously with decreasing temperature, but no other significant change would occur.