Презентация на тему по химии Д.И.Менделеев и его великое открытие (на английском языке)

the 150th anniversary of the publication of the periodic

table

Тhe purpose of the presentation: to acquaint students with the structure and laws of the periodic system

Dmitriy Ivanovich Mendeleyev is a great Russian scientist,

talented chemist. He is best known for his development of the periodic law of the properties of the chemical elements. This law states that elements show the periodicity of properties when they are arranged according to atomic weight.

born near Tobolsk, Sibiria. He was the seventeenth child

in his family. Dmitriy was mother’s favourite son. Later he studied Chemistry at the University of St.Petersburg. Then he was sent to study at the University of Heidelberg. There he met an Italian chemist Stanislao Canizarro, whose views influenced his thinking very much.

scientist's estate

became the professor of Chemistry at the Technical Institute

and then at the University of St.Petersburg. Because of no good textbooks in chemistry were available at that time, he decided to write the two – volume work Principles of Chemistry, which became a classic.

writing of his book, Mendeleyev tried to classify the

elements according to their chemical properties. In 1869 he published his first version of what later became known as the Periodic table, in which he demonstrated the Periodic law. Two years later he published the second version of Periodic, in which he left the gaps for elements that were not yet known.

of the chemical elements formed by them of simple

and complex substances are periodically dependent on the atomic weights of the elements.

of elements

of the periodic table are organized like a big

grid. The periodic table has rows and columns, and each of them means something different.
The period is the number of elements starting with alkali metal and ending with the halogens and inert gases.

alkali metal

halogen

inert gases

2-8 elements. There are – 1,2,3.
Large periods consist of

18-32 elements. There are – 4-7. The seventh period is incomplete

element on the top row (the first period) has

one of its electrons. All the elements in the second row ( the second period) have two layers for their electrons. The largest number of electron layers is in the seventh period.

electronic layers

charge of the nucleus

charge of the nucleus increases
The radius of the atom

decreases
The number of electronic layers does not change
4) The number of electrons in the outer electron layer increases.
5) Metallic properties decrease, non-metallic properties increase.

periodic table has a special name for its columns.

When a column goes down ( from top to bottom) it*s called a group. As for the number of electrons in a group they are the same in number in the outer layer.

the electrons of the outer layer

The charge of the nucleus increases
The radius of

the atom increases too
The number of electronic layers increases
4) The number of electrons in the outer electron layer does not change

5) Metallic properties increase , non-metallic properties decrease

chemical elements are connected with Russia?
What names of chemical

elements are connected with geographical items?
What names of chemical elements are connected with the names of scientists?
Тhe names of which chemical elements contain the names of space objects?
The names of which chemical elements are connected with colors?
What is the Russian name of the element nitrogen?
This element is named after the mythical hero who gave people fire.

Russia?

geographical items?

Scandinavian peninsula
Gaul – ancient Latin name of France
Polonius-Poland
California-California

in the USA

France-France

with the names of scientists?
Gadolinium (Gd) — after

the Finnish chemist Johan Gadolin.
Curie (Cm) — in honor of the French scientist, physicist Pierre Curie.
Einstein (Es) — in honor of the German physicist albert Einstein.
Fermi (Fm)-in honor of Italian physicist from America Enrico Fermi.
Mendelev (Md) - in honor of the famous Russian chemist, author of the Periodic table of chemical elements Dmitry Ivanovich Mendeleev.
Nobel (No) - in honor of the Swedish scientist Alfred Nobel (the name is controversial, there are other versions of the origin of the word "Nobel").
Lawrence (Lr) — in honor of the American physicist Ernest Orlando Lawrence.
Rutherfordium (Rf) - in honor of the British physicist of new Zealand origin Ernest Rutherford.
Seaborgium (Sg) — in honor of the American physicist Glenn Seaborg.
Borius (Bh) - in honor of the Danish scientist, physicist Niels Bohr.
Meitnerium (Mt) — named after the Austrian physicist Lisa Meitner. Lisa Meitner, Actually.
X-ray (Rg) - in honor of the German physicist Wilhelm Conrad x-Ray. More Correctly — X-Rays.
Copernicus (Cn) - in honor of the Polish astronomer Nicolaus Copernicus.

names of space objects?

with colors?
Фиолетовый -purple
желтый-yellow
Красный - red
green- зеленый
Silver -серебристый

nitrogen?
Nitrogen - lifeless

who gave people fire