Dmitri Ivanovich Mendeleev презентация

Biography
Dmitri Ivanovich Mendeleev(8 February 1834 – 2 February 1907) was born in the village of Verkhnie Aremzyani, near Tobolsk. At the age of 16, Dmitri moved to Saint Petersburg and won a place at his father’s old college. In 1855, aged 21, he got a job teaching science in Simferopol, but soon returned to St. Petersburg. There he studied for a master’s degree in chemistry at the University of St. Petersburg. He was awarded his degree in 1856.
In 1867, aged just 33, he was awarded the Chair of General Chemistry at the University of Saint Petersburg. In this prestigious position he continued pushing to improve chemistry in Russia, publishing The Principles of Chemistry in 1869.

Periodic table
The breakthrough came early in 1869, as Mendeleev was preparing for another industrial tour – this time to investigate and improve cheese-making techniques. Meanwhile, having completed the first volume of his textbook, he was struggling to establish a framework for the second. He later recalled the process as follows:
’So I began to look about and write down the elements with their atomic weights and typical properties, analogous elements, and like atomic weights on separate cards, and this soon convinced me that the properties of the elements are in periodic dependence upon their atomic weights…’

Periodic table(pt.2)
On the 6th of March 1869 the first rough sketch of his table was presented to the Russian Chemical Society. Later that year the society’s journal published a more considered version, a short abstract of which appeared in German translation. It attracted little attention outside Russia but Mendeleev persevered, continuing to lay out more cards on his table.

Other achievements
Mendeleev was one of the founders, in 1869, of the Russian Chemical Society. He worked on the theory and practice of protectionist trade and on agriculture.
Mendeleev devoted much study and made important contributions to the determination of the nature of such indefinite compounds as solutions.
Mendeleev is given credit for the introduction of the metric system to the Russian Empire.
He invented pyrocollodion, a kind of smokeless powder based on nitrocellulose.