#TBT - On this day in 1869, the first periodic table of chemical elements was presented. Dmitri Mendeleev presented the system to the Russian Chemical Society on that day. #WhitmoreSchool #SchoolAnytimeAnyplace.
#TBT - On this day in 1869, the first periodic table of chemical elements was presented. Dmitri Mendeleev presented the system to the Russian Chemical Society on that day. #WhitmoreSchool #SchoolAnytimeAnyplace.
