The history of the development of chemistry

"The Skeptic - Alchemist or Commentary on the Experiments Made of Mixed Bodies as Proofs of the Four Elements and the Three Chemical Principles" the theory of alchemy was severely criticized. It can be said that from this period chemistry began to develop as a science. At the end of the 17th century, the German chemist G. Stahl created the theory of phlogiston. Although this theory was also wrong, it was very important for its time. Because the scientists of that time completely got rid of alchemy based on this theory. At the beginning of the 18th century, the Russian scientist MV Lomonosov proved that the mass of metal does not change no matter how much it is heated in a closed vessel, thus proving that the phlogiston theory is wrong.
Based on Lomonosov's experiment, the French scientist A. Lavoisier proved that when metal is heated, it reacts with oxygen in the air. Lavoisier created the correct scientific theory of combustion and oxidation processes. In 1808, the English scientist Dalton created his atomistic theory based on his experiments and determined the ratio of chemical elements in a compound. In 1869, the creation of the periodic table of elements by DIMendeleyev and the appearance of evidence proving the complex structure of the atom at the beginning of the 20th century, chemistry is wide. opened the way for its development. In recent years, great work has been carried out in the development of chemical science and chemical industry in Uzbekistan. In the development of chemistry in Uzbekistan, academicians S.Yu. Yunusov, OS Sodikov, MN Nabiyev, HUUsmanov, KSAhmedov and others have made great contributions.

1.		radio-activity	reidiouack'tivati	radioaktivlik
2.		reagent	ri'eidjent	modda
3.		reactor	rieakto	reaktor
4.		synthesis	sintisis	sintez
5.		equivalent	ikwivelent	ekvivalent
6.		Nitrogen	naetrijen	azot
7.		publication	pablekeshn	Nashr qilish
8.		substance	sabstens	modda
9.		Introduction	introdikshin	kirish
10.		representative	reprizentetiv	vakil
11.		represent	reprizent	Aks ettirish
12.		energy	enerjy	enirgiya
13.		rust	rast	zang
14.		salient	sellient	yaqqol
15.		molten	meulten	erigan
16.		nitrate	naitreit	nitratlar
17.		half-done	haf 'dan	yarmi qilingan
18.		lens	lenz	linza
19.		niello	ni'eleu	Qora kumush
20.		nitroglycerine	naitrou 'gliserin	nitroglitserin
21.		preserve	prizev	saqlamoq
22.		pretty	priti	yoqimli
23.		purple	рeр1	to‘q qizil rang
24.		runny	rani	oquvchan
25.		harden	hadn	qotmoq
26.		customary	kastomeri	oddiy
27.		Daedalian	di'deilien	murakkab tarkibli
28.		diluent	diljuent	erituvchi
30.		dour	due	qattiq
31.		molecular	ma'lekjula	molekulyar