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Besides water, what is a substance the expands when frozen?

Question #19277. Asked by Chemist.

Roxanne33
Answer has 5 votes
Roxanne33
24 year member
339 replies

Answer has 5 votes.
Intersting question. Most of the websites state taht water is the only one but here's once excerpt from another site :
'Only one other pure substance, the metal bismuth, has the characteristic of being denser in the liquid than in the solid state.!
Source : link http://www.parentcompany.com/design_kit/dek1g.htm

As for antimony, I'm checking...

May 21 2002, 6:17 PM
Roxanne33
Answer has 9 votes
Currently Best Answer
Roxanne33
24 year member
339 replies

Answer has 9 votes.

Currently voted the best answer.
Bismuth and antimony also expand when they freeze, as do some alloys that contain those metals. This is why bismuth and antimony are used in type-metal, which can be molded with great accuracy: The metal does not shrink as it solidifies, so it does not pull away from the corners and edges of the mold.

Source : link http://www.textbookleague.org/36heat.htm

May 21 2002, 6:20 PM
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