Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

Monthly Update sign up
Mailing List signup
Reactions in Chemistry
Broadcast ScheduleRegisterAbout the WorkshopSupport MaterialsSite MapChannel-Talk
Sub Image2:Macro to Micro Structures
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
> _______________________________________________
> Channel-talkchemistry mailing list
> Channel-talkchemistry@learner.org
> http://www.learner.org/mailman/listinfo/channel-talkchemistry
> You may un-subscribe from this email list at any time by using the
> online form at the above URL. If you have difficulty using this
> form, please send email to Channel-talkchemistry-admin@learner.org
> and our mailing list administrator will assist you. Our privacy
> policy is posted online at:
> http://www.learner.org/about/privacy_policy.html


© Annenberg Foundation 2017. All rights reserved. Legal Policy