From dvenez@erols.com Mon Dec 18 22:12:34 2006
Date: Mon, 18 Dec 2006 22:12:26 -0500
From: David Venezky <dvenez@erols.com>
To: 'Walter Sanford' <wsanford@wsanford.com>
Subject: Order for December, 2006


Walt:

            Items 1 through 4 of the attached order are those items I 
thought were ordered from Flinn last June.  Item 5, Sodium, is suggested 
for a cool demonstration of the reactivity of the metal with water.  The 
reactivity that takes place with water that is covered with a blanket of 
mineral oil is extremely impressive.  Item 6 is more hydrogen peroxide if 
you believe it needs to be reordered now.

I included 2 items that I believe a good PTA would donate funding to 
purchase if it is interested in providing its Middle School with state of 
the art equipment for teaching 8th Grade physical science.
 If you think it is appropriate, I will speak with two neighbors who
have children in the 8th grade about the still and pump.

Finally, while looking through the catalog, (reminds me of my youth when I 
looked through Sear's and Ward's catalogs for my wish lists!) I found two 
items you should review:  Molarity on p-104 and boil water by cooling on 
p-318.

I plan to return the 2006 catalog tomorrow morning on my way to run some 
last minute errands. Will see you then.

Dave


PS:  I am positive the problem with the lab on Friday was due to the 
distilled, "ozonated" water.  It must have contained a large amount of 
dissolved carbon dioxide that formed calcium carbonate when it was added 
to the lime water.  No matter how much water I added, the calcium 
hydroxide solution never became clear.  I have two new bottles of 
distilled water that I will use to test my theory after the break.

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