Is water the only substance that can exist as solid, gas, and liquid?

Subject: Is water the only substance that can exist as solid, gas, and liquid?

Date: Mon Sep 28 13:07:03 1998
Posted by Nancy
Grade level:
School: No school entered.
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Area of science: Chemistry
ID: 907006023.Ch

Message:


A recent ad for a show at our children's museum on water 
(sponsored by the local utility company)states, "Water is the
only substance on earth that can exist as solid, gas, and liquid."
This doesn't sound right to me. Surely there are LOTS of
substances that "can"---whether they do naturally or not.
Is the utility company right???

Re: Is water the only substance that can exist as solid, gas, and liquid?

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