Students studying for exams at Phan Chau Trinh High School (Da Nang). The key knowledge in the high school graduation exam is in the 12th grade Chemistry program, the number of questions related to the 11th grade program is very small and mainly combined with the general knowledge question. Reinforce basic theory Ms. Huong said: Chemistry is an experimental science with a large amount of knowledge, ranging from theory at the level of awareness and understanding to exercises at a high level of application and application. According to Ms. Huong, from qualitative to quantitative exercises, experimental questions to questions related to economic, social, and environmental issues… most students focus on conquering Quantitative exercises with the desire to achieve high scores in the exam but forget that quantitative exercises only account for 25% of the exam structure (about 10 questions/40 questions of the Chemistry exam). Click on the image to view the content. “Students should have a more realistic view of the exam questions, thereby increasing the amount of time to review and consolidate basic theory into a fixed source of capital for themselves before each exam,” Ms. Huong said. In addition, Ms. Huong illustrates the learning method for the knowledge content on metal corrosion, metal preparation in the metal outline section. Systematic knowledge to grasp includes: Corrosion of metals and metal processing. Specifically, metal corrosion is the destruction of metal or alloy due to the action of substances in the surrounding environment (M > Mn + + ne). In particular, metal corrosion has two forms: chemical corrosion and electrochemical corrosion. Chemical Corrosion: Corrosion reaction does not generate electric current. And electrochemical corrosion: Corrosion reaction simultaneously generates electric current. Electrochemical corrosion occurs when in a material there are different electrodes, in contact with each other and placed in an electrolyte environment. Rust (corrosion of cast iron and steel objects in moist air, acid …): Fe-Anode (-): Fe > Fe2+ + 2e (Oxidation) C-Catot (+): O2 + 2H 2O + 4e > 4OH– (Reduction) Or: O2 + 4H+ + 4e > 2H2O Rust generation reaction: 2Fe + 3/2O2 + nH2O > Fe2O3.nH2O The similarity between chemical corrosion and electrochemical corrosion is the oxidation – reduction process. But chemical corrosion does not generate electric current, metal corrodes slowly; while electrochemical corrosion generates electric current, metal is corroded quickly. For metal protection against corrosion, there will be two methods of surface protection: Isolate metal from the environment by coating the metal surface with environmentally sustainable substances such as grease, paint, and plating. metal, enameled; also electrochemical protection that binds a metal to another more active metal. For example, attaching zinc to the steel hull (submersible part) will corrode the zinc and protect the hull. Preparation of metals, the principle of reducing metal ions to metal atoms (Mn + + ne > M). With methods of electro-treatment, heat-treatment and hydro-treatment. Formula for expressing Faraday’s law: (according to the number of moles of electrons exchanged). m: Mass of substance collected at the electrode (g) A: Molar mass of the substance obtained at the electrode (g/mol) n: Number of electrons exchanged I: Amperage (A) F: Faraday’s constant (F = 96500) Students need to draw connections, simple ways of remembering when doing related types of work. For example how to solve the question package about metal modulation methods like: Which of the following metals can be prepared by hydrometallurgy? A. Ca. B. Na. C. Mg. D. Cu. Which of the following metals can be prepared by solution electrolysis? A. Ag. B. Na. C. Ba. D. Al. You can use diagrams for this type of question like this: K, Ba, Na, Mg, Al – Zn, Fe, Ni, Sn, Pb, Cu, Hg, Ag, Pt, Au Molten electrolysis Solution electrolysis, heat treatment, hydrometallurgy. The way to do the test effectively is to calmly read the exam questions. Hundred or used manually Ms. Huong said: When reviewing, students need to remember the principle “Hundred or not with familiar hands”, repeating information as much as possible, the deeper the memory, the easier it is to recall. So do as many exercises as possible. When doing the test, there must be a relationship of knowledge, good points, and skills that need to be applied to each type of post; exchange materials with friends and teachers. Click on the image to view the content. “For lessons on mainstream theory, students need to master the definition and concept, understand the essence of that definition and concept, and know how to apply it to solve related questions. For the lesson on quality, candidates need to firmly grasp the name, properties, relationship between structure and properties, and practical application”, Ms. Huong said. According to Ms. Huong, in order to solve chemistry exercises, students first need to master the theory, then practice more skills in applying theory to specific exercises, problem analysis skills, and using tricks. calculate… According to Ms. Huong, the effective way to do the test is to calmly read the exam questions. With the form of theoretical questions, quickly read through the sentences to see the answers immediately, the questions are left to do later. With the question type of counting the number of true/false statements, in each statement should note the points in the topic. wrong, exception, it will be more convenient for you to check your work again. With the form of quantitative exercises, which sentences are familiar, have been met and done first. Which sentences are difficult and novel to do later and when done, you should combine looking at the answer because some sentences can be easier to navigate from the answer.

It was from a sarcastic comment of the online community on Twitter that the news that the Ford Bronco was being developed an all-electric version immediately became a phenomenon discussed on American car forums. Specifically, shortly after Ford announced the F-150 Lightning, a Tesla supporter commented asking Ford CEO Jim Farley if they are truly committed to a future centered around electric vehicles, why new product lines like Ford Bronco does not have this option? In response, the Ford leader asked this person, “Why do you think we don’t have one?”. Immediately, many American newspapers questioned the Ford spokesman, but the American brand temporarily declined to comment on the feasibility of the project. In 2018, Ford said it would have 7 electric vehicle lines launched before the end of 2022 with a commitment that electrified versions will target the best-selling car series such as Bronco, Escape, Explorer, Mustang and F. -150. Information about the Ford Bronco Hybrid, since then, has generally not been much except for a short video with the digital dashboard on the SUV showing the EV Coaching feature from last year. If Ford is still developing an electrified version of the Bronco from 2018 to now, the 2022 milestone they announced before is completely doable. Reference: Carscoops

Toyota Cross HV operates in the inner city of big cities in Vietnam The picture of electrified vehicles in Vietnam At the seminar on electrified vehicles in Vietnam organized by Tien Phong newspaper, sharing about the picture of electric cars in the world and Vietnam, Expert Nguyen Trung Hieu – Head of Policy Planning Department TMV said: a unit that has the conditions to participate in the research and production of electric vehicles, we have a general view of the picture of electrified cars as follows: Firstly, from the 70s of the last century, when the gasoline crisis When oil broke out, car manufacturers were forced to find a new direction, which is to find a way to replace internal combustion engine fuel. Second is the factor of climate because internal combustion engines contribute to the cause. Therefore, global warming is caused by the third is the concentration of too many vehicles using internal combustion engines, which causes air pollution, and the fourth is that along with the development of society, the technological trend is a condition. necessary to contribute to the promotion of production. Therefore, since the 70s, car manufacturers have been looking for new directions in vehicles using clean energy.” When the chairperson asked the question, is the price an important issue affecting the development of electric vehicles in Vietnam? Mr. Nguyen Trung Hieu said: the general car price includes production costs and taxes. For electric vehicles, there is a discount on prices due to the decreasing price of batteries. The second is in terms of tax, currently the Vietnamese government has preferential treatment for electric vehicles. Therefore, the factors of usage habits and some other factors are the issues that need attention. Maybe in about 5-10 years, the electric vehicle market will be doubled, tripled and the price will decrease. Currently Toyota has a full range of models, but it is only a matter of when to launch to match the status and development potential of the country. To do this is a matter of policy. In general, the picture of electric vehicles is a story of national challenges, and seizing the opportunities is a national problem. Outstanding advantages of electrified vehicles Toyota Cross uses environmentally friendly electrified vehicle technology Toyota Vietnam and Hanoi University of Science and Technology (HUST) have cooperated, discussed and implemented a project to monitor and evaluate the performance of gasoline cars and hybrid gasoline-electric vehicles (Hybrid) in 4 areas. factors include Fuel Consumption, Emission Level, Safety and Driving Experience under real conditions. During the period from October 23, 2020 to December 23, 2020, with test conditions including actual roads, labs and test sites in peak hours, normal hours / ring roads , radial roads, inner city roads, one-way roads, research results show that the advantages of Hybrid cars are maximum fuel savings, low exhaust levels, smooth and powerful operation, and very smooth and quiet. In particular, Hybrid cars can save fuel and reduce CO2 emissions from 1.5 to 2 times compared to conventional cars, so they are very environmentally friendly. Why is the hybrid car line suitable for the current situation in Vietnam? Sharing about why hybrid cars are suitable for Vietnam’s current situation, Mr. Mai Ngoc Tuy, Head of Technical Service Department of Toyota Motor Vietnam said, firstly, with this model, we There is no need to change the user’s usage behavior. Because the way to use this car is like using an internal combustion engine car today. Second, there is no need to invest in infrastructure, which is extremely expensive. Third, if using hybrid cars, it will have less impact on socio-economic issues. Because if using this vehicle, the gasoline supply chain will not be affected and the problem of solving social jobs will not change.