Galogenlar mavzusiga oid tajribalar

It can go in practice reaction complete the equations.



EXERCISE 4

Translate the text and fill the cluster
- fluorine -chlorine -bromine - Remember - halogen - brown ink crystalline substance - yellow-green gas - reddish-brown liquid

-radactive









HALOGEN





EXERCISE 5

Answer interesting questions

1. Members of this family have won the Nobel Prize several times in the history of chemistry for the discovery of radioactive elements. One of them is the only scientist to have won the Nobel Prize twice. Say the last name of this family. (Curry.)

2. One day, water passes through the remains of a scientist. When he gets home, he angrily throws himself on the hot stove. After a while, he looked, the calyx was not liquefied. The coals were much stronger after cooling. What chemical process took place in the shoes thrown in the oven? (Vulcanization.)

3. This encyclopedic scientist found the specific gravity of gold, mercury, lead, silver, copper, iron, and tin so precisely that almost a thousand years later, the specific gravity between them was determined by modern methods. the difference is only 0.1… 0.3%. He also gave a detailed description of the properties and properties of many minerals. Name the scientist. (A.Rayhon Beruniy)

4. It is known that although the chemical formula of some organic substances is the same, they differ significantly in their chemical properties. Grape and tartaric acids are represented by the same empirical formula, although they are different. One of the chemists proposed in 1830 that such compounds be called isomerism. Which chemist made this suggestion? (Berselius)

5. Several scientists who worked on obtaining this element in its pure form have died. The English chemists were the Knox brothers, the French were Gay-Lussac and L.J. Tenar. Even the famous scientist M. Faraday did not get it. In 1886, the French chemist A. Muassan declared that he had received this "elusive avenger" in its purest form. One of his eyes was blindfolded at the time. Name the element that has puzzled scientists for years. (Ftor.)