Video Gallery
The Iodine Clock Reaction!
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The iodine clock reaction is a classical chemical clock demonstration experiment to show chemical kinetics in action. It was discovered by Hans Heinrich Landolt in 1886. Two color solutions are mixed and at first there is no visible reaction. Then you\'ll see the solutions changing to clear or cloudy white color.
The iodine is mixed with starch to make a dark blue-black color solution. Then the solution of vitamin C is added to make it clear.
How does it work? Iodine has two different “oxidation states” – one where the iodine molecules have a negative charge (I-) and the other where they have no electric charge (I0) Only the iodine with no electric charge can combine with starch to make the blue-black color. Certain chemical reactions (called oxidation and reduction reactions) can make iodine shift back and forth between these two states when it is mixed with Vitamin C solution.
Uploaded by Suzanne Milford.
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00:45
Pledge of Allegiance and Pledge to the Texas Flag
Debbie White-Lacey provides the signed version of the Pledge of Allegiance to the United States Flag & The Pledge of Allegiance to the Texas Flag.
Uploaded Mar 30, 2012 to Sign Language Services -
1:34
It's All About Me!
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What if there was a special place TO LEARN, TO GROW AND TO BELONG ? TSD students tell us why that place is right here at Texas School for the Deaf.
Uploaded Feb 26, 2014 to Human Resources -
3:43
Graduation Song 2012
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At graduation there is traditionally one song performed live and the other recorded. Keisha and the \"Dynamic Studio\" filmed and edited their final goodbye to the Graduating Seniors to Jordin Spark\'s \"One Step at a Time\".
Uploaded Oct 04, 2012 -
2:01
Kick-Off of the Go Green Makeover
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On February 28th Pureology and Global Green USA kicked off the Go Green Makeover competition at TSD.
Uploaded Apr 27, 2012 -
2:24
TSD Vision, Mission and Core Beliefs
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Uploaded Nov 09, 2016
