It is pointed out that the development of human society can not be separated from the development of chemistry, and the contribution of chemistry to the creation of material life, its influence on human living environment, its role in regulating life and improving human quality, and its role in social and cultural development can not be ignored. Chemistry is not only a science about nature, but also a science about people. In the development of contemporary science, they are moving towards unity. Therefore, modern chemistry is not only a means to understand the evolution of life process, but also a means for human survival and liberation. Its research fields are directly or indirectly related to the development of human society. With the development of society, chemistry has become the central science to meet the needs of society, creating modern material civilization and spiritual civilization, and constantly affecting the development and progress of human society. 1. The contribution of chemistry to the creation of human material life is 65,438+0. Provide food and control population. At present, the world population is nearly 6.2 billion, and the global grain volume is nearly10.878 billion tons, of which about 30-50% is the income from chemical fertilizers. Every year, 60 million people need food aid and 862 million people are malnourished. It is estimated that the world population will reach 9.3 billion in 2050. In the face of rapid population growth, the corresponding grain output must increase rapidly to meet people's living needs. Therefore, while paying attention to the development of biotechnology, we must also rely on the development of fertilizers and pesticides to ensure it. Many foods are eaten by pests and mice every year, and chemical pesticides and rodenticides play a great role. Improving the efficiency of plant photosynthesis and making full use of solar energy can provide more food and resources for human beings. Chemists and biologists cooperated with each other to effectively reveal the complex chemical reaction mechanism of photosynthesis by using modern laser spectroscopy and other advanced technologies. This is not only beneficial to improve agricultural output, but also can realize artificial simulation of photosynthesis, which can be used for water decomposition and ammonia synthesis. Growth regulators are a kind of compounds that can regulate the physiological activities of animals and plants at very low doses. They have a variety of regulatory functions, such as promoting plant rooting, growth, early flowering and fruiting, cultivating seedless fruits, etc., and have important agricultural economic significance. Chemists have extracted hundreds of these natural compounds and found that they have high biological activity. In addition, chemistry also provides various protective agents, preservatives, flavoring agents, flavor AIDS, colorants and various nutritional additives for grain storage and food processing. Natural organic chemistry, taste chemistry and food chemistry are playing an increasingly important role. Increasing grain production and providing chemical nutrition by chemical means is only one aspect to solve the problem of human life and survival, and controlling population growth is also very important on the other hand, because the earth is limited and cultivated land is more limited. Although many countries and regions have implemented family planning at present, the world population growth rate is still amazing, and the population explosion crisis still exists. Cultivated land is sharply reduced, energy resources are excessively consumed, and chemical products such as fertilizers and pesticides pollute the environment. Can the ecological environment bear it? Therefore, it is an effective long-term countermeasure to actively develop medical chemistry and biochemistry technology, provide effective contraceptives and sterilization with little side effects, and strictly control population growth, even negative growth after the population reaches a certain peak. 2. Providing modern materials and new energy Modern chemistry provides various new materials for continuously improving the quality of life and expanding the consumption lifestyle. The cotton production in the world today is not sufficient, which is far from meeting people's demand for clothing. The chemical fiber industry has been able to provide more than100000 tons of products every year. Plastics not only become the structural and decorative materials of furniture, but also are widely used in building materials, communication materials and packaging materials. At present, the annual output of plastics in the world has reached more than 60 million tons. Advanced means of transportation have created convenient conditions for increasingly frequent social interaction and transportation. Chemistry can not only provide excellent structural materials for its manufacture, but also provide high-quality fuel and lubricating oil for its operation. The annual output of synthetic rubber for vehicles alone in the world is over 8 million tons. With the rapid development of modern chemical science and technology, especially the development of directional synthesis catalysts and the adoption of molecular shearing technology, it is possible to manufacture various portable materials. Information plays an increasingly important role in people's lives. The development of modern information technology has greatly changed people's view of time and space. However, information technology is not only the task of electronics, but also closely related to chemistry. New information technologies, such as ultra-fine processing of large integrated circuits and optical communication, all depend on the development of chemical functional materials. The gasification and liquefaction of coal can not be separated from chemistry, the development and utilization of solar energy needs chemistry, and the development and utilization of nuclear energy must also involve chemists. Hydrogen energy has always been regarded as the most ideal energy source, but although there are many methods to prepare hydrogen, it is not ideal economically, so there are still chemical problems that are difficult to solve. Chemical storage is of great significance to the storage of hydrogen and solar energy, and it is an important means to ensure the sustainable and effective utilization of energy. Eliminating pollution in energy industry, improving fuel utilization rate and saving energy are important contents to solve energy problems, and chemistry also makes great contributions, so chemical industry itself is an important department of production capacity and energy use. Water is no less important to human beings than information and energy. Domestic water, agricultural water, industry and electricity transportation all need water. Without water, there would be no humans at all. But the fresh water on the earth only accounts for 0.6%. At present, the solutions to water are basically related to chemistry, protecting the natural environment and the influence of chemistry on human living environment.