Chemical Riddle #2
Tom Kuntzleman | Thu, 05/01/2014 - 15:41
A student of mine, Anthony Shepherd, and I worked together to develop a new chemical riddle. Check out the video and see if you can come up with an answer.
Demonstrations
Solution to Chemical Riddle #1
Tom Kuntzleman | Tue, 04/29/2014 - 09:15
In the video below, you can find the solution to the chemical riddle involving the food dye and bleach experiment. You can also find a description of how to set up and carry out the experiment. Finally, an extension to the activity is presented. Thanks to Erica Jacobsen, James Hanson, and Alfredo Ti
Can you solve this chemical riddle?
Tom Kuntzleman | Fri, 04/25/2014 - 12:16
Can you solve the chemical riddle described in the video below?
Pyrex by any other name...
Tom Kuntzleman | Fri, 04/04/2014 - 10:48
Did you know that Pyrex glassware used in chemistry labs is different than Pyrex glassware used in kitchens? Pyrex glass used in chemistry experiments is made of borosilicate glass, whereas the Pyrex used when baking is made of soda lime glass. What’s the difference?
Nail Bottle Demonstration in Slow Motion
Tom Kuntzleman | Fri, 02/21/2014 - 11:27
The nail bottle demonstration is one that many of us have conducted in our classes. To perform this demonstration, 2 – 3 mL of ethanol is placed into a plastic bottle that has two nails punctured into opposite sides of the bottle. After stoppering the bottle, a Tesla coil is touched to one of the nails. A spark jumps from one nail to the other, which initiates the combustion of vaporized ethanol inside the bottle. We recently filmed this reaction with our high speed video camera.
“Dear Soap Boat 2.0…”
Erica Jacobsen | Fri, 02/14/2014 - 11:58
A fan letter for a chemistry experiment? Well, yes. I read Tom Kuntzleman’s blog post “Soap Boat 2.0” over four months ago and immediately bookmarked it.
Whoosh Bottle, take 1
Tom Kuntzleman | Thu, 02/13/2014 - 09:17
My students and I intend to use a high-speed camera to film a variety of chemistry experiments in slow motion. The first reaction we have decided to film is the “Whoosh Bottle”. You can read more about this particular experiment in an article in Journal of Chemical Education here. NOTE: O
Freezing soap bubbles
Tom Kuntzleman | Thu, 01/09/2014 - 12:09
When it is cold outside...why not blow bubbles?
Ice clouds
Tom Kuntzleman | Mon, 12/16/2013 - 08:33
When the outside temperature drops below 0°F (-18°C), the conditions tempt this experiment!
JCE Classroom Activity #92: Testing for Iodide in Table Salt
Tom Kuntzleman | Wed, 11/20/2013 - 20:01
One of over 100 activities in the collection, JCE Classroom Activity #92 describes how to test for the presence of iodide in iodized salt using only water, iodized salt, 3% hydrogen peroxide, vinegar and liquid laundry starch. Watch the video for an added twist to the activity.