Potassium - Periodic Table of Videos
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The team at periodicvideos has created a TED-Ed Lesson for every element of the periodic table. This one is about potassium -- an "evil" element, but one that's crucial to life. In this video, see some violent explosions and the gentle creation of a potassium mirror.
What does the professor give as the possible reason for the fact that we call burned garden rubbish “potash”?
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