How to understand chemistry is the key to human progress

Chemistry - the key to human progress" is quoted from a speech by Professor Seaberg, a famous American chemist and Nobel laureate in chemistry.

Chemistry has played a very important role in the history of human progress. Chemistry has gone through the stage of prehistoric practical technology to the stage of modern chemistry represented by atomic-molecular theory, and the stage of modern chemistry represented by modern science and technology and the theory of the structure of matter. In the early days, chemistry was only a practical technology, and China was at the forefront of the world in this regard.

Two of China's four major inventions are achievements in chemistry. China's porcelain firing technology is world-famous. Fine bronze objects are rare in the world, and these science and technology have played an important role in the progress of mankind in the world.

Under the extensive study of medicinal chemistry and metallurgical chemistry, the atomic-molecular theory was born, which brought chemistry from practical technology to science. Under the guidance of this theory, a large number of elements were discovered, and at the same time, the fundamental law of the material world was revealed, the periodic law of the elements. The establishment of the modern theory of the structure of matter has further revealed the secrets of the material world, and a large number of synthetic substances have appeared.

Chemists in our country have also made outstanding contributions. The synthesis of bovine insulin is the world's first artificial method to synthesize a protein with life activity, which is the first step for human beings to explore the secrets of life. The development of chemical theory has promoted the development of synthetic chemistry.

The penetration between chemistry and other disciplines has promoted the development of science such as materials and energy. Materials are the material basis for human survival and development, and have always been an important milestone in human progress. The Stone Age, the Bronze Age, and the Iron Age were all marked by materials.

Without semiconductor materials, there would be no computer technology; Without special materials with high temperature resistance and high strength, there will be no aerospace technology; There would be no modern communication without optical fibers; Without synthetics, would life be so colorful today? Chemistry still plays a very important role in the development of modern society. Fossil energy is limited, and chemistry is needed to improve combustion efficiency and develop new energy; Protecting the environment inhabited by humans requires chemistry; Chemistry is needed to increase crop yields and solve the problem of eating; Maintaining human health is inseparable from chemistry, and it is not difficult to see that in social development, chemistry plays a role that cannot be replaced by other disciplines.

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1. Chemistry plays an important role in our understanding and use of matter, the world is composed of matter, chemistry is one of the main methods and means used by human beings to understand and transform the material world, it is a discipline with a long history and vitality, it is very closely related to human progress and social development, and its achievements are an important symbol of social civilization.

2. From the primitive society that began to use fire, to the modern society that uses various artificial substances, human beings are enjoying the fruits of chemistry. Human life can be continuously improved and improved, and the contribution of chemistry plays an important role in this.

3. Chemistry is one of the important basic sciences, which has developed rapidly in the interpenetration with physics, biology, geography, astronomy and other disciplines, and has also promoted the development of other disciplines and technologies. For example, the results of nucleic acid chemistry have raised today's biology from the cellular level to the molecular level, establishing molecular biology; The analysis of the chemical composition of various stars has led to the law of element distribution, the existence of simple compounds in interstellar space, the experimental data for the evolution of celestial bodies and modern cosmology, and the enrichment of the content of the dialectic of nature.

The development of chemical science has enhanced human understanding of nature and promoted social progress. Therefore, chemistry is one of the key disciplines for human progress. However, some chemical changes or phenomena will affect human life and the sustainable development of society, and we must have a correct understanding of this and be able to deal with it fully, highly and responsibly.

There are many contents related to human life and social development, such as clothing, electricity, heating, domestic garbage, cosmetics, medical treatment, transportation, resources, pollution, etc., as well as new materials, new energy, health, sustainable development of environment and resources, pollution problems, etc. In teaching, teachers should collect more materials, observe more, explore more, practice more, and take the first step, but don't be afraid of being asked by students, now students are stronger than teachers It is the general trend, the main reason is well known, that is, the advent of the information society, students check the Internet, but most of us have no network. But psychologically, we have to accept that students have some problems that they understand better than we do.

Unleashing students' thinking and changing from teachers to mentors is the only way to change the role of teachers in the curriculum reform. Teacher-student joint research helps students experience the learning process, stimulates their interest in learning, and boldly encourages students to explore new things and "learn by doing". Chemistry and human life and social development, the main content includes common compounds, air, water, life and industrial products, related materials, energy, health, environmental protection, sustainable development, etc., when learning these knowledge, how to better strengthen the connection between chemistry and human life and social development.

Not to mention anything else, chemistry is a kind of foundation in society, such as petroleum, fertilizer, power generation, and so on, which is indispensable, related to our lives, these things are also academic low-end in chemistry, to the highest, that is, most of us are not common, only some chemists know, there is a potential to benefit mankind in the future, as far as I know, the role of chemistry in medicine, for example, let's say paclitaxel, is now the most mainstream ** cancer drug, If there is no chemical means to synthesize it, cancer patients simply cannot get it, because thousands of yew can extract so a few tenths of a gram, organic synthesis has become the solution, and there is the material, as the basic hardware of many electronic industries, there are no chemists to solve these problems, no matter how good the electronic software is, it is useless, for example, analytical chemistry, there is no superb analytical means, how to ensure food safety, there are many hidden dangers of food safety in our country, management is one thing, But technology is also a bottleneck.

Combustion has a history of hundreds of thousands of years and is one of the earliest chemical reactions utilized by human beings, and the discovery and utilization of fire has improved the living conditions of human beings and made human beings intelligent and powerful.

Two of the four great inventions of ancient China are the contributions of chemistry (papermaking, gunpowder), from the ceramics, bronze, iron, wine, and dyes made by people in ancient times, to today's people's clothing, food, housing and transportation are inseparable from chemistry, synthetic drugs, the production of chemical fertilizers and pesticides, the development of new energy and new materials, and chemistry also plays an increasingly important role in the research of the environment and life sciences. Fabrication of products with specific functions using nanotechnology, etc....

Chemistry is closely related to our lives and the development of society.

The world is composed of matter, and chemistry is one of the main methods and means used by human beings to understand and transform the material world. For example, the use of chemicals to produce fertilizers and pesticides to increase food production; The use of chemical synthesis of drugs to inhibit bacteria and viruses to protect human health; the use of chemistry to develop new energy and new materials to improve the living conditions of human beings; The use of chemistry to comprehensively apply natural resources and protect the environment to make human life better.

The inventions of chemists have propelled human progress and development. It is for human beings, can make people do things that cannot be done, modern industrial civilization allows people to do not spend a lot of physical strength to do a task, hundreds of years of industrial civilization achievements more than thousands of years of human achievements, there is a great use.

Chemists study 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 a French-Polish scientist who studied radioactive phenomena and discovered two radioactive elements, radium and polonium, and won the Nobel Prize twice in her 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's Ph.D. in 1847 soon proved premature for his professor's decision, and at the age of twenty-six, Pasteur became a famous chemist for his work on the mirror isomers of tartaric acid.

The historical origin of chemistry is very ancient, and it can be said that the earliest chemical practice began when humans learned to use fire. Our ancestors drilled wood to make fire, used fire to bake food, kept warm on cold nights, drove away wild beasts, and made full use of the glow and heat phenomenon when burning. At the time, it was just an accumulation of experience.

The formation of chemical knowledge and the development of chemistry have gone through a long and tortuous road. It develops along with the progress of human society and is the inevitable result of social development. And its development promotes the development of productive forces and the progress of history.

It is the application of chemistry that has become a sign of human progress.

Today, chemistry, as a basic discipline, is playing an increasingly important role in science and technology and all aspects of social life. The research objects of chemistry are all kinds of substances in nature, and the vast universe and the substances that can be seen and cannot be directly observed by human beings on the earth are atoms or molecules. Chemistry in the 20th century was a science based on experiments, and experiments and theories have always been two aspects of chemical research that are interdependent and mutually reinforcing.

Since the beginning of the 20th century, due to the influence of the development of other disciplines of natural sciences and the extensive application of contemporary scientific theories, technologies and methods, chemistry has made great progress in understanding the composition, structure, synthesis and testing of substances, and has made many important achievements in theory. On the basis of the four sub-disciplines of inorganic chemistry, analytical chemistry, organic chemistry and physical chemistry, a new sub-discipline of chemistry has emerged.

As a sign of the times of the 21st century, mankind has begun to master and use nuclear energy. Sub-disciplines such as radiochemistry and nuclear chemistry have emerged one after another and developed rapidly. Interdisciplinary disciplines such as isotope geology and isotope cosmochemistry were born one after another. The periodic table has been expanded to include element 118, and superheavy elements are being explored to test the elemental "stability island hypothesis".

The theory of the origin of elements, which is dependent on modern cosmology, and the determination of the age of nuclides, which are closely related to the theory of evolution, are constantly supplementing and updating the concept of elements. The synthesis and application of various polymer materials provide a variety of important materials with excellent performance and low cost for modern industry and agriculture, transportation, medical and health, military technology, as well as people's clothing, food, housing and transportation, and have become an important symbol of modern material civilization. The polymer industry has developed into an important pillar of the chemical industry.

The 20th century was also the era of organic synthesis. Chemical separation methods and structural analysis methods have been greatly developed, many structural problems of natural organic compounds have been satisfactorily solved, and many new important organic reactions and specific organic reagents have been discovered.

To sum up, we have reason to fully believe that in the new era of the 21st century, chemistry will develop more and more rapidly and become the key to human progress.