[ELI5] Can one physically compress water, like with a cyclinder of water with a hydraulic press on the top, completely water tight, pressing down on it, and what would happen to the water?

Question

[ELI5] Can one physically compress water, like with a cyclinder of water with a hydraulic press on the top, completely water tight, pressing down on it, and what would happen to the water?

In: 1967

Answer 1

I’m not a scientist, but a mechanical engineer.

https://en.m.wikipedia.org/wiki/Phase_diagram

The link gives the phase diagram for water.

As you can see, up to something between 1 GPa and 10 GPa all you have is high pressure water (for most temperatures) . Then at some point if the pressure is increased enough, it turns into a solid. Ice, but at regular temperature and insane pressure.