From: NFetter@aol.com
Date: Fri Sep 17 2004 - 16:32:26 PDT
From: NFetter@aol.com Message-ID: <1da.2adb40c8.2e7cce0a@aol.com> Date: Fri, 17 Sep 2004 19:32:26 EDT Subject: Re: pinhole Alkaline Earths & Alkalis
Hi Rebecah,
The oxides of mageseium (magnesia) and and calcium (quick lime) occur in
nature and can be obtained from the earth. These oxides are alkline, hence the
name alkaline earths. These group 2 oxides are essentially insoluble in water,
however the group 1 oxides are soluble in water and have long since been leached
from the earth into the oceans. these oxides are also alkaline, hence the
term alkali metals. The oxides of all of the groups 1 nd 2 elemnts do not change
when heated in a furnace. the term calcination was used to describe the
process of heating lime (calcium hyroxide) to convert it to quicklime (CaO). Poor
Mozart ended up being dumped into a common grave and covered with quicklime
before being buried. This was a common practice in his time to avoid the bad odor
of decomposition.
Neil Fetter
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