Re: pinhole compounds ... pure substances?

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From: NFetter@aol.com
Date: Thu Dec 05 2002 - 13:43:14 PST

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From: NFetter@aol.com
Message-ID: <f.3d99ff6.2b212272@aol.com>
Date: Thu, 5 Dec 2002 16:43:14 EST
Subject: Re: pinhole compounds ... pure substances?

Hi Sue
Any material that is uniform and whose components are chemically bound is
considered a pure substance. They may be atoms (helium), molecules
(nitrogen), or ionic compounds (sodium chloride). Alloys are uniform, but
their components are not chemically bound, hence brass is not a pure
substance (mixture of zinc and copper).
Neil Fetter

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