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Overnight News Digest: How weird is water? New form of ice just discovered unexpectedly! [1]

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Date: 2023-02-03  

The properties of this form of water ice could make it more like glass and less like a crystal. https://t.co/YjPYMxFHxi

Shaken and chilled — but not stirred — ordinary frozen water turns into something different: a newly discovered form of ice made of a jumble of molecules with unique properties.

“This is completely unexpected and very surprising,” said Christoph Salzmann, a chemistry professor at University College London in England and an author of a paper published on Thursday in the journal Science that described the ice. [...]

“Lo and behold, something completely unexpected happened,” said Dr. Rosu-Finsen, who is now an associate editor at the journal Nature Reviews Chemistry.

The white material inside looked like what one would expect smashed-up ice to look like, but it had been transformed.

The material was now denser, and much of the crystalline structure had been destroyed, producing an amorphous material. The density, however, did not match the already known high- and low-density amorphous ices. Intriguingly, it fell in between; indeed, it was almost exactly the same density as liquid water. Until now, all of the solid forms of ice, crystalline or amorphous, were either significantly denser or less dense than liquid water.

The researchers named it medium-density amorphous ice, or MDA.

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[1] Url: https://www.dailykos.com/stories/2023/2/3/2150904/-Overnight-News-Digest-How-weird-is-water-New-form-of-ice-just-discovered-unexpectedly

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