Video Iodine clock

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Science Fair Project Idea
The iodine clock reaction is a favorite demonstration reaction in chemistry classes. Two clear liquids are mixed, resulting in another clear liquid. After a few seconds, the solution suddenly turns dark blue. The reaction is called a clock reaction because the amount of time that elapses before the solution turns blue depends on the concentrations of the starting chemicals. In this chemistry project, you will explore factors that affect the rate of the iodine clock reaction and can even record… Read more
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Time Required Average (6-10 days)
Tinkering
Prerequisites You should be familiar with chemical reactions and their rates.
Material Availability You will need to order a chemical kinetics kit online. See the Materials and Equipment list for details.
Cost Average ($50 - $100)
Safety Hydrochloric acid is corrosive to hands and eyes. Wear splash goggles and gloves when when working with all chemicals. Avoid direct contact with chemicals as hydrogen peroxide and the iodine-starch complex can stain skin and clothing.
Free science fair projects.