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Anonymous users2024-02-11The inventions of chemists have propelled human progress and development. It is for the service of human beings, can make people do things that can not be done, modern workers lack this industry civilization allows people not to spend a lot of physical strength to do a task can be completed, hundreds of years of industrial civilization achievements more than thousands of years of human achievements, there is a great use.
Chemists are interested in chemical elements.
Atoms, molecules, and how they interact with each other. Chemists also study and test drugs, explosives, and other things. Chemistry is a very important science, because most of the new drugs are developed through chemical techniques.
Representatives of chemists.
1. Marie Curie.
Marie Curie (1867-1934) was of French Polish origin.
Scientists, who study radioactive phenomena, have discovered two radioactive elements, radium and polonium.
He won the Nobel Prize twice in his lifetime.
As a brilliant scientist, Marie Curie had a social impact that ordinary scientists do not have. Especially because she is a pioneer of successful women, her example has inspired many people.
2. Pasteur.
Pasteur was born in 1822 in the town of Dole, in eastern France. He studied at the University of Paris, where he majored in natural sciences. His talent didn't show itself during his student years, and one of his professors rated his chemistry grades as "passing."
But Pasteur, who received his doctorate in 1847, soon proved that the professor's judgment was premature, and that Pasteur, who was only twenty-six years old, was guilty of his identification of the mirror isomer of tartaric acid.
research and leap into the ranks of famous chemists.
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Anonymous users2024-02-10Pros: 1. The use of chemical fertilizers and pesticides has increased the yield of crops;
2. The synthesis of new drugs has saved millions of lives;
3. The development of clean and pollution-free energy will change our blue sky and clear water.
Disadvantages: While promoting development, it will inevitably bring some disadvantages. The mass production of the national economy requires a large number of raw materials, which causes a large amount of resources to be consumed in order to produce, which will cause great harm to the environment in resource exploitation;
In production, there will be a lot of production wastewater, and some unscrupulous manufacturers will directly discharge the sewage that does not meet the standards, causing serious harm to the environment and residents; In the later stage, many chemical products cannot, such as plastics, etc., will also cause environmental pollution.
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Anonymous users2024-02-09The 20th and 21st centuries were the century of chemistry, and the contribution of chemistry to mankind was enormous, almost everywhere we are familiar with: industrially: plastics, which are things we have to touch every day, computer cases, keyboards, mice, plastic cups, slippers, clothes, are inseparable from plastics.
And the plastic raw material is through petrochemicalization.
The best way is to search directly for "the most famous xx house in history" on the landlord
For example, Mendeleev was a Russian scientist who discovered the periodicity of chemical elements, made the world's first periodic table according to atomic weight, and predicted some elements that had not yet been discovered; Lavoisier, a famous chemist and biologist, is widely regarded as the greatest chemist in human history, Lavoisier is known as the father of chemistry by later generations; Dalton, an English chemist and physicist, was the proposer of the modern atomic theory, and the key doctrines he provided made great progress in the field of chemistry since then; Nobel is a Swedish chemist, engineer, inventor, military equipment manufacturer and inventor of explosives, Nobel has 355 patented inventions in his lifetime, and has opened about 100 companies and factories in 20 countries on five continents, including Europe and the United States, and has accumulated huge wealth; Kekule, a German organic chemist who mainly studies the structural theory of organic compounds, discovered the simple structure of benzene in a dream, which is known as a great talk; Hou Debang, whose name is Qirong, is born in Minhou, Fujian, a famous scientist, an outstanding chemist, the founder of Hou's alkali production method, the pioneer of China's heavy chemical industry, one of the founders of modern chemical industry, and an authority in the world's alkali industry. Slim next to it.
Nobel and Hou Debang are chemists Zhang Heng, Guo Shoujing, Albert Einstein, Newton, Pascal, Rutherford, Fermi, Galileo, Yang Zhenning, Deng Jiaxian, Qian Xuesen, Wang Fuchang, Qian Sanqiang, Zhu Guangya, Zhou Guangzhao, Yu Min, Song Jian, Ding Zhaozhong, He Zehui, Wan Hu, Zu Chongzhi, Kepler, Bell literati and ink writers include Tang Bohu, Zheng Banqiao, Li Baibai, Juyi, Wang Wei, Lu You, Wang Xizhi, Su Shi, Cao Cao, Cao Zhi.
and the doctrine of restitution (the doctrine of restitution of nutrients). >>>More