Image via WikipediaLa historia de la tabla periódica en vídeo:
- Vídeo realizado por brentjchristy:
This is a video I did for my Chemistry class back at community college for extra credit. It documents the history of the periodic table.
- A Video Clip from The CassioPeiaProject 2008© As Seen On the Wide World Web
The Periodic Table
SUMMARY: The periodic table of the chemical elements is a tabular method of displaying the chemical elements. Although precursors to this table exist, its invention is generally credited to Russian chemist Dmitri Mendeleev in 1869. Mendeleev intended the table to illustrate recurring ("periodic") trends in the properties of the elements. The layout of the table has been refined and extended over time, as new elements have been discovered, and new theoretical models have been developed to explain chemical behavior. The periodic table is now ubiquitous within the academic discipline of chemistry, providing an extremely useful framework to classify, systematize and compare all the many different forms of chemical behavior. The table has also found wide application in physics, biology, engineering, and industry. The current standard table contains 117 elements 27 January 2008.
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