Galvanic cell and related products bearing the important value of knowledge

Source: 2020 - 04 - 14 19:57 hits: times of galvanic cell and its related products have important value concept in the discipline curriculum knowledge is very important. For chemical discipline, the concept is also the basis and core knowledge learning. Chemical abstracted from a large number of facts is the concept of the nature of the chemical properties of generalization. It in chemistry 'knowledge network plays an important' nodes' role. Based on these basic chemical concepts, students can link seemingly fragmented chemical knowledge, form a complete network of knowledge in your mind. If the learner in the cognitive structure not formed a clear concept of chemistry, it is impossible to grasp the inner link and law of chemical change. Galvanic cell concept is a core concept, can integrate a lot of basic knowledge and basic concepts. It can be points and surfaces. It is very important in the chemistry curriculum system, is the focus of high school chemistry teaching. In high school chemistry curriculum standard of the compulsory courses and elective courses, puts forward the following requirements: in the required courses, students are required to chemical energy and electrical energy conversion relations and its application, understand the importance of the new battery research; In elective module, requests the student to understand the cause of the energy conversion in the chemical reaction, to understand the working principle of galvanic cell can be written and battery electrode reaction equation, the understanding of common chemical power source type and its working principle, the realistic significance of the chemical energy of electric energy conversion and important applications, can explain why the electrochemical corrosion of metals, know the dangers of metal corrosion, through experiments to explore the measures to prevent metal corrosion. For this purpose, the shandong province science and technology publishing house of ordinary high school curriculum standard experiment textbook compulsory 2 galvanic battery principle to carry on the simple introduction after the compulsory course for the students to learn, on the basis of a certain knowledge of chemistry, chemical reaction principle, adopt the concept of 4 battery has carried on the detailed introduction, not only deepen the understanding of the principle of the battery, and widen the introduction on the application of the galvanic battery principle. , at the same time, the research contents of batteries in the calendar year the university entrance exam, high test in recent years, the concept of primary battery more flexible, by a single judge principles such as check the cathode electrode equation of writing, such as electronic movement, combined closely with the production, life, the process to solve the problem of actual zhongyuan battery principle and its related content, to say the galvanic cell concept become students' comprehensive knowledge analysis and solve the problems such as comprehensive ability of one of the important knowledge carrier.