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How to control carbon dioxide emissions and develop suitable and efficient catalysts to convert automobile exhaust into pollution-free gas is a difficult problem in organic chemistry. In the face of the world energy crisis, how to efficiently use H energy is also an important topic in the field of organic chemistry. Coal, oil, natural gas these non-renewable energy must be efficient and comprehensive utilization, the development of the petrochemical industry makes the use of synthetic fibers penetrate into all aspects of life.
"Our food is composed of proteins, fats, sugars, vitamins, water, etc. in organic chemistry. Studying the role of these substances in the human body has a positive guiding effect on our health, if a person does not consume these nutrients normally in a day, then the health of the body will be affected, when our body is not, when we are infected by the disease, we have to go to the hospital to see a doctor and take medicine, and this is linked to the pharmaceutical chemistry in organic chemistry, how each drug works in the human body is to be studied, if the patient does not have the right medicine to take, then he may face death.
The main composition of detergents commonly used in the household is organic substances, and washing is divided into water washing and dry cleaning. Dry cleaners contain formaldehyde and perchloroethylene, which are very harmful to the human body. The main ingredients of detergents are a variety of surfactants and detergents.
It is usually harmless to us, but entering the groundwater can affect the quality of the water and the quality of the drinking water for the residents. People use detergent in the hope that it has a good washing effect, and from the perspective of environmental protection and healthy life, they hope that it is non-toxic or has little toxicity. However, household detergents are not environmentally friendly detergents, and the detergents used in washing will be discharged into rivers and seas with sewage, which will cause eutrophication of water bodies, and we will use a variety of materials in our lives, most of which are used in organic synthesis.
The synthesis of plastics has greatly affected and changed our lives, making our lives more convenient, but the use of plastics has also brought many problems: many plastics themselves can release harmful gases at high temperatures, but many people are using food bags; Because plastic is not easy to degrade and is unfavorable, white garbage pollution has become ubiquitous, but this problem has not been solved very well.
The home decoration materials we use now are very closely related to organic chemistry, and the unqualified decorative materials contain a very small amount of radon, which is very harmful to the human body due to radioactivity, which can cause human lesions and even cancer. Formaldehyde, etc., emitted from decorative materials is also a potential killer. Many people are worried about decoration materials because of this, and so many problems are closely related to organic chemistry.
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The principle of detergent can remove oil: it is the principle of similarity compatibility Many of the current ones are composed of hydrophobic groups and hydrophilic groups, so hydrophilic groups and water are compatible, hydrophobic and oily are compatible, understand.
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The first year of high school is so boring! Aren't we able to take the college entrance examination to register in the third year of high school, to be honest, there are many people who haven't done it. The school old loves to coax people!
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1. Market research on carbonated drinks and fruit juice drinks (3-4) 2. What is the effect of fluoride in toothpaste on teeth, and why do people in some areas have brown teeth?
3. Research on the daily preservation of iodized salt.
4. Why phosphorus-free laundry detergent is difficult to promote.
5. Investigation of domestic waste disposal in urban areas.
6. Can kitchen household waste be reused?
7. Dynamic equilibrium can be seen everywhere.
8. Replace the acid and alkali indicator with plant pigments and the test of its discoloration range 9. How far away is green energy.
10. Preliminary study on the application of organic disinfectants.
11. The impact of chemical fertilizers on soil.
12. The impact of pesticide pollution.
13. Utilization of some waste products.
14. Investigation of stone dust pollution.
15. Pollution of industrial wastewater.
16. Hazards and disposal methods of waste batteries.
17. Survey of rural domestic water.
18. The relationship between factory density and living environment.
19. Causes, hazards and countermeasures of acid rain.
20. The impact of air pollution on crops.
21. Chemistry in life.
22. Domestic garbage.
23. Indoor pollution.
24. Chemistry in the kitchen.
25. Cosmetics.
26. Food contamination.
27. Green refrigerators, green commodities and green food.
28. Improvement of chalk and dust elimination.
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Your iron pot will rust!
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It's fun to do experiments such as galvanic cells and electrolytic cells
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1. Knowledge: (1) It shows that the cells of green plants can produce starch under light and release oxygen at the same time.
2) Explain that carbon dioxide and water are the raw materials for photosynthesis in the cells of green plants.
3) Elucidate the photosynthesis of green plants.
2. Ability: (1) Through experiments such as whether green leaves can make starch under light, students can cultivate their observation ability, experimental ability and thinking ability.
2) Through the analysis of the results of photosynthesis experiments, students will develop the ability to analyze problems, solve problems, and express opinions.
(3) Cultivate students' spirit of actively participating in discussions and collaborating with others.
3. Emotional aspect: (1) Through the process of experimentation, cultivate students' rigorous scientific attitude and establish a sense of excitement in the research shed of scientific experiments.
2) Establish bioscience values through the application of the principles of photosynthesis to agriculture.
Green leaves make starch in the presence of light.
Methodological steps. 1) Dark treatment (2) partial shading (3) illumination (4) removal of leaves (5) alcohol decolorization (6) dropwise iodine solution (7) color development.
Outcome. The unmasked part of the leaf turns blue with iodine, and the covered part of the leaf does not turn blue with iodine.
Conclusion. Green leaves make starch in the presence of light.
Conception. Green plants use the energy provided by light to synthesize organic matter such as starch in chloroplasts, and convert the light energy into energy stored in organic matter.
Green leaves make starch in the presence of light.
Methodological steps. 1) Dark treatment (2) partial shading (3) illumination (4) removal of leaves (5) alcohol decolorization (6) dropwise iodine solution (7) color development.
Outcome. The unmasked part of the leaf turns blue with iodine, and the covered part of the leaf does not turn blue with iodine.
Conclusion. Green leaves make starch in the presence of light.
Conception. Green plants use the energy provided by light to synthesize organic matter such as starch in chloroplasts, and convert the light energy into energy and lead stored in organic matter.
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Qualitative and quantitative analysis of the gas composition should be carried out. In particular, the determination of oxygen content.
It can be analyzed with the help of instruments.
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This should be considered a biological subject.
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Liquids, solids.
AD peroxide hole hydrogen, manganese dioxide, water, oxygen.
The oxygen is larger than the air, and it has overflowed from the mouth of the bottle. ba
Of course, there is hope, inorganic chemistry and organic chemistry are two branches of chemistry, inorganic talks about some basic and elemental knowledge, organic talks about the properties and reflection mechanism of organic compounds, etc., you can learn well, I hope you inorganic will also keep up.
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