Junior high school environmental protection essay of more than 1,000 words. How to write must be innovative.

Abstract The progress of science and technology will promote the development of v

Junior high school environmental protection essay of more than 1,000 words. How to write must be innovative.

Abstract The progress of science and technology will promote the development of various social production undertakings and make people's lives richer and more convenient. This will also bring about various public hazards and hidden dangers of damaging the natural environment. Only when people, especially middle school students who are cross-century workers, universally establish environmental awareness, can social forces be formed to jointly protect human beings' own living environment.

Keywords middle school chemistry teaching, environmental chemistry, environmental awareness

China National Library Classification Number G633.8

Human beings use science and technology to transform nature and promote social progress , but at the same time it brings the misfortune of environmental pollution to itself. Frequent public nuisance incidents in modern times have finally made people recognize this fact, and found that chemicals cause the most serious environmental pollution. It is important to control the pollution that has occurred, but the fundamental plan is to prevent it before it happens. We need to make people consider the impact of the environment while building and establish "environmental awareness." It can be seen that it is very necessary to introduce knowledge about environmental chemistry and prevention of environmental pollution to students in middle schools.

1 The importance of strengthening environmental chemistry education for middle school students

Our country is a developing country. Since the reform and opening up, township enterprises have emerged as a new force. While bringing huge economic benefits, they have also brought great benefits to our country. The vast rural areas, a pure land, have brought new environmental pollution and labor protection issues. It was reported during the "Eighth Five-Year Plan" that the level of air pollution in my country at that time was equivalent to the most serious pollution period in developed countries in the world in the 1950s and 1960s. The annual dust emission was 23 million tons, and the annual SO2 emissions reached 146.1 million tons. By the end of this century, exhaust gases emitted from coal burning and motor vehicles will cause more serious pollution to the atmosphere. Faced with such a severe situation, if environmental management is not strengthened and the increasing industrial "three wastes" continue to pollute the environment and destroy the ecological balance, it will have serious consequences for my country's socialist construction and economic development. Therefore, it is indispensable to publicize and educate the entire nation about environmental and ecological knowledge, and it must start from middle school education.

2 Carry out environmental chemistry education to students in combination with chemistry teaching

2.1 Make environmental protection a conscious action of small citizens through classroom education

One of the important contents of environmental chemistry First, it is to study the changing patterns of chemical pollutants in the environment, that is, to use physical chemistry and other methods at the atomic and molecular levels to study the sources, migration, and chemical behaviors of chemical pollutants in the environment during their transformation, as well as reaction mechanisms and Accumulation and destination, etc. Due to the poor environmental awareness of our country's citizens, this is incompatible with the increasingly serious environmental problems. To raise the public's awareness of environmental protection and make environmental protection a conscious action for every citizen, we must first start with students and in the classroom. When students are doing experiments on the preparation of toxic gases such as Cl2, NO2, H2S, etc., students should be emphasized to check the air tightness of the gas preparation device and the appropriate dosage of chemicals (try to use trace amounts, as long as the experimental effect is obvious) , and the design of exhaust gas absorption devices, etc. After the experiment is completed, the waste liquid should be poured into the waste liquid tank and the recyclable ones should be recycled as much as possible to develop good habits of protecting the environment.

2.2 Carry out environmental chemistry knowledge education through experiments

One of the purposes of middle school education is to create qualified reserve workers for the society. Middle school chemistry education will play an enlightening role in the study of environmental science. This highly practical subject should be well utilized to enable students to master certain environmental protection knowledge through experiments. There are many sources of pollution in middle school laboratories. The state proposes that there are 21 types of toxic substances in the atmosphere of residential areas, and there are 14 types in middle school chemistry laboratories. For example, the odor that escapes during the experiment of preparing bromobenzene is bromine vapor, which not only pollutes the classroom environment but also seriously affects the health of teachers and students. In response to this problem, use the knowledge they have learned to guide students to analyze carefully and find out that the reason is that the device for preparing bromobenzene is not tight enough, so the Br2 that escapes during the reaction cannot be completely condensed into a liquid when passing through the long glass tube, so will escape from the catheter port. To avoid the escape of Br2 during the experiment, we should try to improve the experimental device so that the entire reaction process involving Br2 can be carried out in a closed system, that is, the reaction should be arranged in a "Y" shaped tube. A gas scrubbing bottle is connected in series between the reaction device and the HBr gas absorption device, containing carbon tetrachloride to absorb Br2 in the gas.

3 Link theory with practice to improve students’ understanding of learning environmental protection knowledge

3.1 Stimulate students’ learning enthusiasm from the coordination between humans and nature

New "Chemistry Teaching University"

The Outline clearly states: “In the teaching process, great attention should be paid to linking it with practice, so that students can better master the knowledge and skills they have learned, and the application of these knowledge and skills in industrial and agricultural production, tertiary industry, science and technology, and daily life. Application. With the development of science and technology, the teaching content related to practice should be increased, which can include environmental protection, new content, new energy, ocean, health and ship protection food, etc., but it should be limited to the scope of relevant basic chemical knowledge. Within". It can be seen that the study of basic theoretical knowledge and principles of environmental chemistry is very important, and the focus should be on integrating theory with practice and expanding the basic knowledge. It is necessary to use geochemical knowledge as a basis to store material circulation and energy flow in ecosystems as clues, teach the relationship between air, water, soil, forest, plants and humans, demonstrate the comparison between good ecological micro-environments and severely polluted areas, and briefly introduce today's Environmental issues of concern to the world are used to raise students' awareness through lectures, competitions, etc., making students deeply feel that environmental chemistry is around them.

3.2 Guide students to analyze such ecological issues in view of the greenhouse effect

Use the knowledge acquired by students to guide the analysis of the "greenhouse effect" so that they understand that the CO2 concentration in the atmosphere increases year by year. As part of the solar radiation, the earth's infrared radiation heat cannot penetrate the atmosphere, thus causing the "greenhouse effect", which causes the earth's surface to heat up and melt glaciers, directly affecting the development of modern civilized society. To improve understanding of ecological issues such as controlling the "greenhouse effect". Students should also be allowed to draw conclusions through discussion and analysis that humans must control war and solid waste burning, and vigorously develop forests, in order to improve the ecological environment.

3.3 Combine with the publicity of existing laws and regulations to deepen students’ understanding of the significance of environmental protection

Organize students to participate in the publicity of environmental laws and regulations, and use the Arbor Day on March 12, May On commemorative days such as World No Tobacco Day on the 31st and World Environment Day on June 5th, we have obtained the support of local environmental protection, water conservation, forest protection and other departments to let students understand my country's regulations and common sense in this regard in publicity, so as to improve students' Understanding of environmental management and environmental culture.

3.4 Combine with second classroom teaching to improve students’ interest in learning

Use holidays and summer camps to organize students to study local nature reserves, ecological reserves, water and soil reserves and environmental pollution Districts and others conducted on-the-spot investigations, making them realize that there is a close relationship between people and temperature, climate, air, increased grain production, soil erosion, deforestation and environmental protection. Through on-site comparison, students can enrich their environmental knowledge and conduct questions and answers about environmental pollution and protection based on the knowledge they have already learned. For example, how is acid rain formed? What are the main substances causing air pollution? What are the prevention and treatment methods? etc. To improve students' interest in learning and lay a good environmental foundation for future work.

4 Promote environmental protection knowledge to the society through students to improve the national environmental awareness

my country is a large agricultural country. It is reported that the annual production and use of chemical pesticides in 1993 reached 250,000 tons. After the rural reform, units that relied solely on the use of chemical pesticides have expanded from the past 600,000 production teams to hundreds of millions of farmers. About 200 to 300 million people are directly exposed to pesticides. Every year, the number of casualties due to pesticide poisoning nationwide exceeds 100,000. Due to the lack of ecological and environmental awareness and knowledge about pesticides, and the lack of environmental science education, the abuse of highly toxic chemical pesticides is quite common across the country. This not only endangers the lives of hundreds of millions of farmers, but also affects hundreds of millions of ordinary families throughout society. Through students' dissemination of environmental protection knowledge to relatives, friends and all walks of life, it can not only promote the development of local environmental protection work and improve citizens' environmental awareness, but also promote the research and use of pollution-free biological pesticides.