Iodine
Order-No. 6187
Department:
Year of production: 2016 Duration: 04:22 minutes
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"The subject of this film is iodine, an element in the halogens group. At room temperature, iodine is gray flakes with a metallic shine. But even when just heated gently, iodine gives off a violet gas. That is where the name of the element is from - it is derived from the Greek word ""ioiedis"" which means violet.
Like all halogens, iodine forms diatomic molecules. They are held together by van-der-Waals forces and form a regular molecular solid. If iodine is lightly heated, it begins to sublimate. That means it turns from a solid physical state into a gaseous state. If the iodine gas comes into contact with a cooled object, for example a cooled test tube, it resublimates again. Solid iodine then forms on the cooled test tube in needle-shaped crystals.
This film shows different reactions that involve iodine."
At the end of the purchase process you can choose between the delivery types Download and USB stick.
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No GEMA fee. Protected by copyright.
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Classroom license for unlimited use in your lessons
School license for unlimited use at your entire school
Flatrates are subject to the license conditions stated in the product text