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chemical symbol |
Also found in: Medical, Wikipedia, Hutchinson | 0.07 sec. |
chemical symbolNotation of one or two letters derived from the scientific names of the chemical elements (e.g., S for sulfur, Cl for chlorine, Zn for zinc). Some hark back to Latin names: Au (aurum) for gold, Pb (plumbum) for lead. Others are named for people or places (e.g. einsteinium, Es, for Einstein). The present symbols express the system set out by the atomic theory of matter. John Dalton first used symbols to designate single atoms of elements, not indefinite amounts, and Jons Jacob Berzelius gave many of the current names. Chemical formulas of compounds are written as combinations of the elements' symbols, with numbers indicating their atomic proportions, using various conventions for ordering and grouping. Thus, sodium chloride is written as NaCl and sulfuric acid as H2SO4. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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T-shirts called Kein Titel, Kein Name, die 90er (No title, no name, the '90s) hung from a rod, and a yellow flag with the chemical symbol for alcohol projected into the room. In addition, AG is used to represent agricultural businesses, as well as the silver industry (AG is the chemical symbol for silver). The lead-free process is called SnTech (pronounced "tin tech"), from the chemical symbol for tin, Sn. |
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