Re: pinhole sublimation

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From: Gary Horne (gary.horne@excite.com)
Date: Mon Dec 04 2000 - 11:13:53 PST 

Message-ID: <12992319.975957233983.JavaMail.imail@digger.excite.com>
Date: Mon, 4 Dec 2000 11:13:53 -0800 (PST)
From: Gary Horne <gary.horne@excite.com>
Subject: Re: pinhole sublimation

Yes, I, too, have never fully understood sublimation. I've often found
wisps of ice cubes in the trays in my freezer when I knew they had once been
full ice cubes. I've heard that that is also a result of sublimation. Why?

On Mon, 4 Dec 2000 07:30:26 -0800, Pinhole Listserv wrote:

> Why do CO2 and I2 sublimate instead of going through a liquid phase (at
> room pressure)? I know that you can make them liquify if you pressurize
> them, but why wouldn't they always turn into liquids as the solid form
was
> heated? I've never heard an explanation of this.
>
> -Geoff
> Living by Chemistry
> Room 247, Mail code 5200
> Lawrence Hall of Science
> Berkeley, CA 94720-5200
>
> Leadership High School
> 300 Seneca Avenue
> San Francisco, CA 94112
>
>
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