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Date:         Sat, 5 Feb 2011 08:03:54 -0600
Reply-To:     mcneely4@COX.NET
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dave Mcneely <mcneely4@COX.NET>
Subject:      Re: Freeze Plugs was Oops - I let the engine freeze
Comments: To: Tom Hargrave <thargrav@hiwaay.net>
In-Reply-To:  <051d01cbc4ef$de5b14d0$9b113e70$@net>
Content-Type: text/plain; charset=utf-8


---- Tom Hargrave <thargrav@hiwaay.net> wrote: 


> And BTW, freezing pure ethylene-glycol does not expand when it freezes, it contracts. It can still break things but now it’s pressure from the outside pushing in.


From what I know, water is the only substance that occupies more space upon freezing than it does as a liquid.  It's greatest density is at 4 C, so it expands at temperatures higher and lower than that.  This physical fact creates some interesting phenomena in nature beyond ice forming at the surface of a body of water.


mcneely
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