The Importance of Chemistry

The historical origin of chemistry is very ancient, and it can be said that the earliest practical activities of chemistry began when humans learned to use fire. Our ancestors drilled into wood to make fire, used fire to bake food, warmed on cold nights, drove away wild animals, and fully utilized the glow and heat generated during combustion. At that time, it was just an accumulation of experience. The formation and development of chemical knowledge have gone through a long and winding path. It develops with the progress of human society and is an inevitable result of social development. And its development also promotes the development of productive forces and advances history.

With the progress of technology and the development of productivity, human society has undergone earth shaking changes. Have you paid close attention to the changes in life, and have you paid attention to some chemical changes in life, such as the water vapor and carbon dioxide generated by fire combustion? Copper will oxidize under oxygen, producing copper oxide that changes from bright to dark. Cleaning agents at home always remove dirt well, as hypochlorite plays an important role.

Chemistry mainly studies the changes in new substances, and the key to determining whether a phenomenon is a chemical phenomenon is to see if new substances are produced. The main research objects of chemistry are the changes, composition, structural properties, and changing patterns of new substances.

In nature, oxygen is an important chemical substance that can support people's breathing, provide support and support for life activities, and is also an important combustion element that can support combustion.
The current chemical application in society is mainly in many aspects. First, green chemistry is used to develop new energy and clean energy. For example, burning hydrogen as a fuel can reduce the amount of carbon dioxide and other greenhouse gases produced by traditional fossil fuels, thus reducing the rate of global temperature rise, contributing to normal climate and protecting the environment. In daily life, the food we eat is made through chemical technology and improved through some processes to ensure that it meets people's comprehensive functional needs, healthy nutritional needs, and diverse comfort experiences without toxicity or harmlessness.

The earliest application of ancient chemistry should have been the invention and utilization of fire. Fire can be used for illumination during the combustion process, which is a well-known function. However, during the combustion process, many chemical substances and reactions occur, which are more complex and simple. The combustion process can produce carbon dioxide and water.

Modern chemistry mainly includes atomism and molecular theory. atomism is mainly put forward by Dalton, which studies on the basis of atoms. Molecular theory is mainly put forward by Avogadro, which emphasizes the study of chemistry on the basis of molecules. Their theories together laid the foundation of modern chemistry.
In 1869, Mendeleev discovered the periodic relationship, which led to the invention of the periodic table of elements. At the same time, he also discovered the periodic law between elements, providing rules for people to better learn chemistry and providing rules to follow in chemistry learning. When you first started learning chemistry in junior high school, the periodic rate of elements was something the teacher often asked you to memorize. The periodic table of elements can better learn chemistry and understand the relationships and connections between various substances by reflecting the relationships and connections between the periodic laws of elements, which is of great help to chemistry learning.
The development history of chemistry is a process that goes from simple to complex, from ordinary to profound. It has gone through the efforts of many scientists, and constantly produces new substances in various experiments, constantly verifying and advancing. It has made great contributions to the development of human society.

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