Context: I was trying to figure out why my coke glass bottle exploded in my freezer.
Update: As it turns out, water is a weird one amongst other liquids.
In: 3
Water can both expand and shrink in volume when it the freezer, it depends in the pressures. There is multiple ice phases the one that forms at atmospheric pressure is Ice Ih and is ti less dense the liquid water
If you would put water in a container that would deform you would get some ice that form that is less dense and increases the pressure and water that is more than is formed with it get high enough.
Look at https://upload.wikimedia.org/wikipedia/commons/0/08/Phase_diagram_of_water.svg if the water starts to free some Ice Ih is formed. It is less dense then liquid water so it will compress the remaining water a bit.
The idea that water can’t be compressed is not corrected, it is just very hard to compress, At the bottom of the ocean at the Mariana Trench the pressure is 1,086 bar, a bar is practically atmospheric pressure at sea level, and water density has just increased by 5%.
If you look at the phase diagram that is 1kbar, to get water to form IV that denser the liquid water at a temperature just below 0C the pressure needs to be 6000 bar. So you need a container that can handle an internal pressure 6 times the pressure at the bottom of the oceans. The practical result normal containers can handle the pressure and water expands and they deform or crack. You need a container specially made to handle extreme pressure to get ice that is denser the liquid water, so it is extremely rare
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