The Elements in Action by Theodore Gray!

One of my favorite science-based appsThe Elements in Action is easy to navigate and attractively designed. The New York TimesThe periodic table comes to life with 79 video explorations of the weird, wonderful, and sometimes alarming properties of the elements. Now fully translated into: English, Catalan, Croatian, Dutch, Finnish, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Turkish