how cold can ice get?

Answer 1

Absolute Zero

Answer 2

How Cold Can Ice Get

Answer 3

Technically it can get as cold as any substance can get (because it's not going to undergo another phase change as it gets colder; this is its solid state). So how cold can any substance get? Well, molecules are constantly vibrating, always moving, even in completely solid things - that's a measure of how much heat you have. The more the molecules are moving around, the more heat you've got. So it stands to reason that the absolute coldest point, which we call ABSOLUTE ZERO and measure on the Kelvin scale of temperature as 0 Kelvin, would be where there is ABSOLUTELY NO MOLECULAR MOVEMENT. AT ALL. This state hasn't even occurred yet in a lab - scientists have not been able to get anything to absolute zero - but we know that, at least theoretically, it exists.

Answer 4

The first answer is pretty much right, except that we have gotten very, very close to absolute zero, within about a millionth of a degree Kelvin.

You can't actually get there because of heisenburg's uncertainty principle, which tells us that all molecular motion cannot cease entirely because then you would 'know' exactly where a quantum object was, which isn't allowed (at least in this universe).

Answer 5

Like any substance, it can get as cold as its surroundings. If its surroundings are colder than it is, it will lose heat until its temperature matches that of its surroundings.
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