system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 W; Why does hot water clean better than cold ?
gpt
Much of the things that stick to surfaces are molecules that look like long chains all tangled up. They are tangled in each other and caught in the tiny microscopic ridges in what seems like a smooth surface. When we heat up those molecules the connection between each link in the chain becomes looser and the molecules can untangle themselves from each other and the surface. Then with the physical motion of the water they are removed.