Does water have an actual solid form without having to be frozen?

Question

I’ve always been curious but I can’t find much on it that isn’t just “HEE HOO ICE SOLID”

In: Chemistry

Answer 1

Yeah, but you need fairly specific conditions.

When you hear about phases of matter there’s solid, liquid, and gas, and sometimes plasma.

But when you get into more advanced materials science a phase instead represents different crystal structures that form under different temperatures, pressures, or other conditions.

Water specifically has 18 known different solid phases, only one of which is what you see as regular ice.

Long story short though if you pressurize liquid to about 150,000 PSI water will become solid at room temperature.