ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
*****************************************************************************
We did this demo as a part of a large outdoor science show this past summer. So of course part of it was the WOW factor but as with everything we do we explain the science and connections behind it. We definitely explain the chemistry aspects...catalysts, exothermic, chemical reaction vs physical reaction, etc.
Kathy Fournier
Associate Vice President of Education
McWane Science Center
200 19th Street North
Birmingham, AL 35209
205-714-8254
[log in to unmask]
-----Original Message-----
From: Informal Science Education Network [mailto:[log in to unmask]] On Behalf Of Jeff Rosenblatt
Sent: Tuesday, March 29, 2011 12:45 PM
To: [log in to unmask]
Subject: Re: Giant Elephants
ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
*****************************************************************************
This is an integral part of our stage show about chemical reactions. It is a great way to show several aspects to what a chemical reaction is, such as a change in temperature as heat is released (the toothpaste just steams so well), how a catalyst speeds up the reaction with the sodium iodide...we use a packet of dry yeast dissolved in water instead, the chemical formula of H202 and how the extra oxygen is released...like when you put H202 on a cut and it bubbles, effectively releasing oxygen.
Every time I do this demo I also use the weaker 3% grade H202 from the grocery store first (little wow), then 30% grade, to look at how concentration levels affect the reaction. This demo is a strong connection to daily life since almost everybody uses the 3% grade at home.
Often, I've seen this just presented as a big wow, but there are so many concepts that can be shared.
--Jeff--
Jeff Rosenblatt
Director, Science City
Union Station Kansas City, Inc.
30 W. Pershing Rd. Suite 850
Kansas City, MO 64108
Office: 816-460-2218
[log in to unmask]
-----Original Message-----
From: Informal Science Education Network [mailto:[log in to unmask]] On Behalf Of Luke Donev
Sent: Tuesday, March 29, 2011 12:18 PM
To: [log in to unmask]
Subject: Re: Giant Elephants
ISEN-ASTC-L is a service of the Association of Science-Technology Centers Incorporated, a worldwide network of science museums and related institutions.
*****************************************************************************
Thank you Kathy for posting your recipe for Elephant Toothpaste.
I've seen this reaction done a couple similar ways. I'm curious what your goals are for it are? What does the audience get out of it? It often seems to be big and messy and exciting, but not really connected to anything beyond that. Do you have more that you tie in?
Anyone else out there use this as more than a big wow?
Thanks
--
Luke Donev
http://www.lukedonev.com
[log in to unmask]
On Tue, Mar 29, 2011 at 8:10 AM, Fournier, Kathy <[log in to unmask]>wrote:
>
> Hey All;
> A few weeks back I posted that we had done some large scale elephant
> toothpaste demos for an outside event. Many of you were interested in
> how we did that......
>
>
> Kathy Fournier
> Associate Vice President of Education
> McWane Science Center
> 200 19th Street North
> Birmingham, AL 35209
> 205-714-8254
> [log in to unmask]
>
>
>
***********************************************************************
For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.
The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit http://www.lsoft.com/LISTSERV-powered.html.
To remove your e-mail address from the ISEN-ASTC-L list, send the message SIGNOFF ISEN-ASTC-L in the BODY of a message to [log in to unmask]
***********************************************************************
For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.
The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit
http://www.lsoft.com/LISTSERV-powered.html.
To remove your e-mail address from the ISEN-ASTC-L list, send the
message SIGNOFF ISEN-ASTC-L in the BODY of a message to
[log in to unmask]
***********************************************************************
For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.
The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit
http://www.lsoft.com/LISTSERV-powered.html.
To remove your e-mail address from the ISEN-ASTC-L list, send the
message SIGNOFF ISEN-ASTC-L in the BODY of a message to
[log in to unmask]
|
