Dimitri Mendeleev ( McNese 8 ) By MsBradley Feb 8, 1834 Birthdate Jan 1, 1856 returned to St. pertersburg & Defended his masters thesis, "Research" 7 theroies in Expansions of substances due to heat. Jan 1, 1860 found that if you arange the elements in order of increasing atomic mass then their chemical properties demonstrated definite trends Aug 1, 1861 Wrote his first book on the Spectroscope in Heidelberg Jan 1, 1869 Creates the first ever perodic table Jan 1, 1871 He trsansforemed Saint Petersburg into an internationally recognized center for research of chemistry Jan 1, 1906 He is awarded the Nobel Prize in chemistry for his discovery of the perodic system
