Name: Potassium iodide conductivity @bobworley7974
Uploaded: 2019-04-25T01:29:31-0400
Duration: 8 min 17 s
Description: Potassium iodide is added to starch solution which is conducting electricity slightly. As the KI dssolves the LED brightens up and the blue starch/iodide complex forms at the positive electrode. By having a Nd magnet underneath, the ions rotate.

Advanced catalytic cracking @bobworley7974

Uploaded August 2024 | Updated September 2026, 2 weeks ago

This advanced method uses plastic syringes to collect the gases over water. The gas is removed via a 3-way tap into smaller syringes for burning. It also shows how to do make bromine water in situ in a syringe to estimate the percentage conversion of double bonds.

The small-scale decomposition of ammonium dichromate(VI)

Oxygen content of air using red phosphorus

Seven reactions of silver ions in a puddle

Movement of copper ions in ammonia solution

Electrolysis of copper sulfate with fibre electrodes