| | CANNIZZARO, STANISLAO (1826 - 1910) (Site not responding. Last check: 2007-11-07) |
 | | When Cannizzaro wrote the Sunto, there was no agreement among chemists as to what values should be adopted for atomic, molecular, or equivalent weights; no possibility of systematizing the relationship of the various elements; and no unanimity as to how organic compounds should be formulated. |
 | | Cannizzaro showed how vapor densities could be used to determine molecular weights (and atomic weights), and he laid to rest completely the idea that inorganic and organic chemistry functioned by different rules. |
 | | As Tilden summed up his work in the Cannizzaro Memorial Lecture to the Chemical Society, "There is, in fact, but one science of chemistry and one set of atomic weights." It was Cannizzaro's recognition of true atomic weights that permitted Meyer and Mendeleev to formulate the periodic law at the end of the 1860's. |
| www.scs.uiuc.edu /~mainzv/exhibit/cannizzaro.htm (269 words) |