Curated Video
Oscillating Colour Change
We use three chemical solutions to create an oscillating reaction. The three different solutions are mixed using a magnetic stirrer and the colour changes from clear to amber to dark blue. This pattern repeats as the concentrations of...
Curated Video
Elephant's Toothpaste
We create a rapidly expanding column of foam by mixing chemicals. Hydrogen peroxide and detergent are added to potassium iodide and food colouring to set off a reaction that creates vibrant expanding foam. Chemistry - Reactions -...
Khan Academy
Khan Academy: Unusual Oxygen Oxidation States
Determining oxidation numbers in hydrogen peroxide, H2O2, and oxygen difluoride, OF2 is the focus of this video presented by Sal Khan. [4:10]