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I'm also having the same issue.
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1. For the study of high school chemistry, there should be a good study plan, a good plan is half the success, the study plan includes a unit study plan, a semester study plan, etc., only a good study plan can be designed to have a goal and direction when learning.
2. Before each chemistry class, you should preview the content to be learned in the chemistry textbook of this class, such as equations, reaction principles, concepts, etc., and mark the unclear questions, and you must know what you don't know, only in this way can you have a general understanding of what you want to learn.
3. Of course, the most important thing to learn chemistry well is to listen carefully in class, because the knowledge of chemistry is relatively fragmented, you must take good notes in class, concentrate on listening in class, learn according to the teacher's ideas, and think positively.
4. Chemistry is an experiment-based subject, so there will be some experimental courses, for the experiments to be done, we must first understand the purpose of the experiment, the experimental principle, the experimental method, the experimental procedure, etc., and then do the experiment carefully in the experimental class, and carefully observe, and do a good record of the experiment, of course, we must develop good experimental habits when doing experiments, maybe some habits of doing experiments may be the content of the exam.
5. Strengthen extracurricular reading and expand the level of knowledge, Sukhomlinsky said: "If a student does not step beyond the framework of the textbook, then it is impossible to say that he has a stable interest in knowledge. Therefore, in addition to intensive reading of textbooks, in order to expand their knowledge horizons, summarize knowledge content, improve problem-solving skills and master problem-solving methods, it is necessary to order a high-quality, accurate, and practical synchronous tutorial material.
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Outline Requirements!
Eight common precipitates: silver chloride (white), barium sulfate (white), silver carbonate (white), barium carbonate (white), calcium carbonate (white), magnesium hydroxide (white), copper hydroxide (blue), iron hydroxide (reddish-brown).
Four microsolubles:
Ca(OH)2 (the reason why lime water is marked "clear") CaSO4 (the reason why dilute sulfuric acid is not used in the laboratory production of carbon dioxide) Ag2SO4 (the reason why silver nitrate is used to distinguish between SO42- and Cl-) MgCO3 (the reason why carbonate ions cannot be used to remove magnesium ions in solution) to add a few books mentioned!
Silver bromide (pale yellow), silver iodide (yellow), ferrous hydroxide (white flocculent, quickly turning gray-green, and finally reddish-brown) mno2 (black) silicic acid lead sulphate (black) aluminum hydroxide (white flocculent).
Correct the mistake upstairs.
Lead acetate is one of the few lead salts that is soluble!
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High school chemistry must first have the desire to learn, learn to find problems, and don't give up working hard.
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Preview the basics.
Identify concepts. Review the questions carefully.
Answer the questions carefully. Summarize in a timely manner.
Look for the cause of the error.
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It's too easy, I'll memorize the book, and I don't think I'll need one in the future.
Unless you're a special forces.
Or the one who learns to invent the light bulb, you do all the experiments a few times, and I want to ask you how to learn English.
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High school chemistry is half reading books, half doing practice problems, and it is important to memorize chemical equations, these are the basics.
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Do more questions, learn to focus on the key points, and stay serious in class.
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