Ice Clouds 2.0
Tom Kuntzleman | Tue, 01/16/2024 - 15:12
What is some of the chemistry involved in the formation of ice clouds when boiling water is thrown into icy air?
water/water chemistry
A Demo A Day III: Demonstrations and Props Used in My General Chemistry II Classes
Dean Campbell | Sun, 05/21/2023 - 10:50
Dean Campbell tries to use at least one demo for every class to illustrate concepts described in his chemistry courses. In this post, he includes short descriptions of the demonstrations and props he has used while teaching his collegiate General Chemistry II courses.
Laser-Cutting CDs into Snowflakes
Dean Campbell | Wed, 03/08/2023 - 15:57
Laser cutters can be used to cut and engrave a variety of thin materials. Compact discs, composed of layers of polycarbonate plastic and aluminum metal, were explored for their ability to be shaped with a laser cutter. The laser can successfully cut and engrave the compact discs into the shape of snowflake. However, each disc must first be coated with a material like glue in order to protect the plastic from discoloration and the byproducts from cutting the plastic that can accumulate on the disc surface.
“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.
Electrostatic attraction of distilled water
The electrostatic attraction of distilled water is observed by bringing a charged bakelite rod and a charged glass rod near to a thin stream of the liquid flowing from a buret.
Electrical conductivity of distilled water
The electrical conductivity apparatus circuit is completed by distilled water, a liquid covalent compound.
Electrolysis of distilled water
In the absence of dissolved electrolytes, water will not conduct electricity, so no electrolysis occurs.