system
Given the following post, respond as if you're commenting on Reddit:
human
Liquids can't actually be incompressible, right?

I've heard that you can't compress a liquid, but that can't be correct. At the very least, it's got to have enough "give" so that its molecules can vibrate according to its temperature, right?

So, as you compress a liquid, what actually happens? Does it cool down as its molecules become constrained? Eventually, I guess it'll come down to what has the greatest structural integrity: the "plunger", the driving "piston", or the liquid itself. One of those will be the first to give, right? What happens if it is the liquid that gives? Fusion?
gpt
Correct, they are just much harder to compress than gas. At the bottom of the ocean the water is compressed by a few percent compared to the top. Typically compressing a liquid enough turns it into a solid, water is a little weird in that regular ice is less dense, so if you compress water enough it'll form a less-common phase of ice.