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Sub Image2:Macro to Micro Structures
         
 
Workshops
1) Atoms and Molecules2) Macro to Micro Structures 3) Energetics and Dynamics 4) Theory and Practice in Chemical Systems 5) Chemical Design 6) The Chemistry of Life 7) Chemistry and the Environment 8) Chemistry at the Interface
 
From: MARTINA FALCONER (tfalcone@comcast.net)
Date: Tue Feb 04 2003 - 08:17:13 EST


If you are trying to show pH, wouldn't that mean the second dilution
would have to be 100 to 1, the third 1000:1 ? I think maybe that would
be too difficult to show that way - am I wrong? Tina

----- Original Message -----
From: "Hauser, Michael" <MHauser@stlcc.edu>
Date: Sunday, February 2, 2003 8:32 pm
Subject: [Channel-talkchemistry] Workshop Video 2

> Hello All-
> I enjoyed the demonstration by Pernell Williams regarding the
> dilution of
> food coloring. I do want to point out that students should be
> determining if
> the solutions are COLORLESS as opposed to CLEAR. These words have
> differentmeaning (Windex is blue color but is clear - you can even
> read the label
> through the back side of bottle). I am also curious why 5:1
> diliutions were
> used when a 10:1 dilution would be a great way to introduce the pH
> scale and
> log scale. Comments?
>
> Michael Hauser
>
>
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