High Quality Content by WIKIPEDIA articles! Amorphous ice is an amorphous solid form of water, meaning it consists of water molecules that are randomly arranged like the atoms of common glass. Everyday ice is a polycrystalline material. Amorphous ice is distinguished by its lack of long-range order. Amorphous ice is produced by cooling liquid water quickly (equivalent to a rate of change of temperature of around 1,000,000 kelvins per second), so the molecules don't have enough time to form a crystal lattice. Although almost all water ice on Earth is the familiar crystalline Ice Ih, amorphous ice dominates in the depths of interstellar medium, making this by far the most common structure for H2O in the universe at large. Just as there are many different crystalline forms of ice (currently fifteen known), there are also different forms of amorphous ice, distinguished principally by their densities.

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