Editing Phase diagram (section)

===Crystals===
[[Polymorphism (materials science)|Polymorphic]] and [[Polyamorphism|polyamorphic]] substances have multiple [[crystal]] or [[amorphous]] phases, which can be graphed in a similar fashion to solid, liquid, and gas phases.

[[Image:Phase diagram of water.svg|class=skin-invert-image|thumb|700px|centre|[[Semi-log plot|Log-lin]] pressure–temperature phase diagram of water. The [[Roman numeral]]s indicate various [[Phases of ice|ice phases]].<ref>A similar diagram may be found on the site Water structure and science. [http://www1.lsbu.ac.uk/water/water_phase_diagram.html Water structure and science] Site by Martin Chaplin, accessed 2 July 2015.</ref>]]