The high-pressure phase diagram of ice is shown here. Notice that, under high pressure, ice can exist in several different solid forms. What three forms of ice are present at the triple point marked O? How does the density of ice II compare to ice I (the familiar form of ice)? Would ice III sink or float in liquid water?

Transcribed Image Text:

Pressure (not to scale) 1 atm Ice II Ice I Ice V Ice III Ice VII Ice VI Liquid water Gaseous water Temperature (not to scale)