A light bulb is lit when a conductivity probe is immersed in an ionic solution.
Video of the demo in action https://youtu.be/4WillWjxRWw
Testing different solutions shows varying levels of conductivity based how much a solid ionizes in...
Gamma ray spectroscopy is used to detect the minute amount of radioactive potassium-40 present in the human body. Using a NaI(Tl) scintillation detector in conjunction with a multichannel pulse-height analyzer (PHA), 1.46 MeV gammas...
30% Hydrogen peroxide in a large round bottom flask decomposes rapidly to hissing steam and oxygen when potassium iodide is added.
[https://harvard.hosted.panopto.com/Panopto/Pages/Viewer.aspx?id=c3f365a…; video of...
Balls are rolled on a track to show two particles reacting or a potential well showing the bond between two atoms.
Video of our demo in action https://youtu.be/c6m6pCROEf8
Assembly of three gas discharge tubes and white light source for spectral analysis with diffraction gratings.
Sodium chloride solution is added to silver nitrate solution and a white precipitate of silver chloride is instantly formed.
The silver nitrate solution is around 0.1M, and the sodium chloride solution around 0.5M. Pour the sodium chloride sol'n into the...
A vintage collection of 16 wooden models of the s, p, d, and f atomic orbitals.
Curls of zinc and magnesium are dropped into 2M hydrochloric acid, and bubbles observer'd.
Video of our demo in action https://youtu.be/6L6t8O4J_Eo
A 600ml beaker, clean and clear, is at the focal point of a camera projecting the image of 500 ml of 2M...
Two clean plastic cups, one filled with room temperature water, the other empty, for a student to test with their finger.
Supported by experience, this is a way to introduce heat capacity as an important variable in measuring temperature.
Make sure the...
A variety of element samples to show on the first day of Gen Chem: compare metals and non-metals; solids, liquid and gas elements; compounds vs. elements.
