I feel that high school chemistry is very difficult. Is there any way to learn chemistry well? Be as detailed as possible.

I feel that high school chemistry is very difficult. Is there any way to learn chemistry well? Senior high school chemistry is as detailed as possible, and science is the simplest.

But there are many knowledge points, and we pay attention to the usual accumulation.

I think it's difficult, that is, you used to herd sheep.

Is there any way to learn analytical chemistry well 1? The principle of titration analysis is the key, and the key is calculation.

2. Methods: Strengthen the knowledge of inorganic chemistry; Remember the formula of the calculation result.

How to learn high school chemistry? Try to be specific. The most practical thing is that practice makes perfect.

A lot of practice is the fundamental way to deal with exam-oriented education now.

Don't recite chemical formulas. If you cram, you won't have enough time. What to remember is the color of the main ions and the phenomenon of reaction. Connect chemical formulas with phenomena. In that case, there are many things that can be ignored. Because there are not many chemical formulas in junior high school and senior high school, there is no need to recite them. Remembering phenomena can also help you solve inferences. It is suggested to classify chemical formulas, such as neutralization, redox, battery (although all belong to redox) and so on.

Then it is necessary to memorize the valence thoroughly (there is no way to use the formula, anyway, there is no formula and there is not much mandatory memorization)

Then you need to practice balance more.

Write down some common and easy-to-remember relative molecular weights of substances and ions, such as CaCO3 is 100, NaOH is 40, and sulfuric acid is 98. It can save you the trouble when you do the problem.

Make the basic knowledge common sense, try to finish it within 5 minutes when dealing with multiple-choice questions, and pursue the accuracy of 100% (because multiple-choice questions are not difficult to do, 70% are basic knowledge, and generally you can calculate skillfully without counting a bunch of things)

The inference question is as mentioned at the beginning.

Please find out the chemical formula of filling in the blanks and calculating problems.

Here we go again. Practice makes perfect. It's good to have feelings.

One more thing, we must pay attention to the reading of textbooks. No matter how many times, the college entrance examination comes from textbooks! This is the root!

I feel I can't learn plc well. What can I do to learn plc well? Follow an electrical engineer to do a project and do everything. Learning PLC is mainly practice.

Chemistry is so difficult that I feel dizzy. Is there any way to learn chemistry well ... chemistry belongs to the category of "synthesis" in science, that is to say, it is not only to remember things, but also to use and analyze things. (For example, I will give you an experimental connection picture, and then ask you what the original reactant is through this experiment, which is generally a problem that most students are troubled by.) So, for chemistry learning, first memorize what you want to write down (such as the physical and chemical properties of oxygen, the common chemical reaction agenda), because these things are dead and will not change; Second, thinking more about the truth in the book after class is helpful to use and understand what you have learned. Third, summarize, such as what solution is colored, what gas smells like rotten eggs, and what can precipitate BaCl2 solution. After a long time, I think you can understand all the experimental questions by hand. In many associations, such as iron, you should be able to think of oxygen, and then iron oxide. Then I think of iron ore (iron oxide, iron peroxide, ferroferric oxide, etc. ), and then think of HCl, and then think of FeCl3, and then what color, ...................................................................................................................... depressed!

Seek adoption

How to learn high school chemistry? Is there any way? You still have to remember the basic knowledge. Experimental steps and so on. Just do a few experiments and you will remember. Including experimental supplies.

There are not many classic questions about chemical calculation, but you should understand at least one question every time you do it. You can make some extensions and do it well.

Do several sets of comprehensive exercises.

How to learn chemistry well? I feel that high school chemistry is much more difficult than junior high school chemistry. Hello: 1 Listen to the three elements of a good lesson:

(1) Listening: Only with clear learning objectives and serious learning attitude, full attention, eye, ear, hand and brain, conscious observance of classroom discipline and high concentration can the efficiency of listening be improved.

(2) Thinking: Think actively in class and pay attention to the teacher's ideas, methods and standard requirements for solving problems. Think about the teacher's process of analysis and induction from phenomena, facts to conclusions, or deductive reasoning, as well as the process of reasoning or operation and the principle of devices. The key is to cultivate thinking ability and understand what you have learned, rather than just memorizing conclusions.

(3) Memory: Thinking is accompanied by memory. Memory should be timely, and pay attention to repeated consolidation, memory should also pay attention to methods.

2 Listening methods: Listening methods mainly include checking and reviewing, teaching new lessons and summarizing and consolidating these three links. Just like other subjects, we should concentrate on listening to chemistry class, so as to achieve sight, heart (that is, concentration of thoughts), ears and hands. The key is the heart, that is, to use your brain, think positively and understand what you have learned. According to the characteristics of chemistry, these four aspects have their own characteristics. For eyes, in addition to intuitive teaching such as demonstration experiments, it is important to distinguish between primary and secondary phenomena under the guidance of teachers, quickly capture fleeting or not prominent and obvious phenomena, and also reflect the essential attributes and changes of substances. This requires a high degree of concentration, while remembering these phenomena. Whether it is interesting or not, we need to have a clear learning purpose and attitude, and consciously improve and develop our observation ability. With regard to ear listening and heart listening, the emphasis is on activating the thinking organs, listening clearly, thinking about the process of the teacher's analysis, induction and summary from phenomena, facts and conclusions, or deductive reasoning, reasoning, argumentation, operation and device principles, which are all contents of understanding. Effectively overcome and change the incorrect learning method that does not pay attention to the process of listening and thinking, but only remembers the conclusion. The key to listening and understanding is to develop thinking ability and understand what you have learned. Of course, what should be remembered under this premise is still to be remembered. Hands-on, mainly in accordance with the requirements and norms, carefully carry out experimental operations and master experimental skills. As for taking notes, we should learn to remember the main points and outlines, and don't let them affect our reading, listening and thinking. When checking and reviewing, we should seriously think about the questions raised by the teacher, pay attention to the students' answers and watch the students' operations. Don't think seriously, listen and see more, because you haven't checked yourself. When students' answers and operations are different from their own understanding, we should think about whether it is reasonable. The stage of summary and consolidation is mainly to summarize, so that the content learned in a class can be clear and systematic in your mind, and at the same time you can recall the experiments you have seen or done.

Review stage:

Review is an important part of chemistry teaching and one of the important teaching links. It is an important teaching link for students to further acquire knowledge, develop intelligence and cultivate ability. In the review process, according to the problems existing in knowledge and skills, according to the requirements of teaching syllabus and the focus of teaching materials, the knowledge should be sorted out, so that scattered knowledge points can be strung into a network, making it systematic and structured.

1 review types: there are many types and methods of review, but the types of review can be roughly divided into three types: review in new courses, review in stages, and review in school years.

(1) Review in the new lesson: This review is to review the knowledge related to the new lesson in the new lesson teaching. The purpose is to "review the old and learn the new". From the known to the unknown, from the old to the new, reduce the teaching difficulty of the new curriculum. This can be achieved by asking questions before class or reviewing old knowledge while talking about new content.

(2) Stage review. This kind of review is generally divided into unit review, chapter review and semester review. Unit review is to divide each chapter of the horse into several units according to the content, and review it once after each unit is completed. For example, the first chapter can be divided into one to three sections, four to eight sections. (2) Review of each chapter is completed after the last chapter. Its function is to summarize and synthesize the whole chapter and conduct a small test. Methods According to the "content summary" at the back of each chapter, combined with the students' reality, do the review questions at the back of each chapter or choose appropriate extracurricular exercises for digestion and consolidation. (3) The term review is to focus on the two weeks before the term exam and conduct a comprehensive review of the knowledge learned in a semester. Through review and term exams, the exposed problems are made up with homework in winter and summer vacations, laying a good foundation for later knowledge learning. Review the above stages in the order of the textbook. This can give full play to the role of textbooks and facilitate students to master them.

(3) General review in the school year. It is carried out after the complete textbook, and is not limited by chapter or stage knowledge. Through general review, students can master knowledge more systematically and methodically, and have better comprehensive application ability. The general review of the school year can generally be divided into two stages: systematic review and comprehensive training.

2 review the basic steps:

(1) Before each review, you must make a review preparation plan. For example, if you study by yourself for two hours a night, you should make scientific arrangements according to the subjects and the nature of the subjects you have studied in one day, that is, you should review similar content at intervals instead of going back and forth. This is because psychologically speaking, the review of similar subjects often causes interference and reduces the review effect.

(2) When reviewing, it is best to recall it first, or according to the main points of the lecture record, recall what you learned that day, what the main textbooks were, what experiments were conducted, and so on. Then review the text. At this time, you can review more difficult or unclear places according to your memory, and review less when you understand that there is no problem. This will not only save time, but also concentrate on reading difficult textbooks and grasp the key points. Finally, close the book and think again, especially before doing homework, make clear the key points and difficulties of the textbook.

(3) Chemistry is a subject based on experiments. So when reviewing, we should pay great attention to this feature. For every experiment, we should pay attention to its changes, phenomena, equipment and operating procedures, and understand it from phenomena to essence. At the same time, we must recall and review the changes observed in the experiment, from the phenomenon to the essence, and pay attention to the experimental equipment and operating procedures.

3 Operation method of review: Review is a process of memorizing, mastering, consolidating, deepening, improving and transferring knowledge. It is helpful to systematize knowledge and improve students' logical thinking ability and comprehensive ability by summarizing the contents of chapters and enumerating the interrelations between knowledge. According to different contents, you can choose different methods:

(1) Case method: We must review the nature, preparation, existence and use of substances organically. Through examples, we know that the preparation, use and existence of a substance depend on its nature, and they are organic and internally related. Therefore, when reviewing the properties of a substance, we should understand its preparation method and use according to this property and contact its existence. Similarly, when reviewing the use and preparation methods, we must fully understand the nature of the substances on which they are based. When reviewing the characteristics of ammonia released by the reaction of ammonium salt with alkali, we should pay attention to the laboratory preparation method of ammonia. Because ammonia prepared in the laboratory is based on the characteristics of ammonium salts.

(2) Contrast method: There are similarities and differences between chemical knowledge points. If you can do some comparative analysis during review, you can deepen your understanding and memory. The differences between elements, compounds, homologous elements and heterologous elements can be compared when reviewing some concepts. Comparative method is not only the deepening, expansion and consolidation of old and new knowledge, but also the process of cultivating students' ability of analysis, synthesis and generalization. Such as the solubility of substances, the percentage concentration of solutions, etc., can be compared and analyzed from the aspects of definition, conditions, scope and calculation formula. , so as to find the connection and difference for flexible application.

(3) Association method: When reviewing, we should be good at linking the knowledge before and after to make it systematic. For example, when reviewing the properties of H2, we can associate it with its preparation methods, uses, related experimental phenomena, devices and precautions. Association method is an effective method for chemistry review.

(4) induction: induction is an important review method, which organizes scattered knowledge and complex content into an outline or chart. For example, among oxides, acids, alkalis and salts, through learning, we can find out the transformation rules between them and summarize them into charts, which become the knowledge summary and generalization of the whole chapter and book.

(5) Connecting with practice: We should repeatedly use examples to connect with practice, what to contact, and how to contact, and gradually learn to connect with practice. Chemical experiment is an important aspect of linking chemistry teaching and practice. Accordingly, we should attach importance to reviewing experiments, and link production and socialist construction with various things and phenomena in life, so that students can gradually learn to connect.

Complete homework:

Chemistry homework and problem-solving process also have their own rules: (1) Carefully examine the questions and make clear the requirements. First of all, we should carefully understand the meaning of the question, find out what conditions the question gives and what questions need to be answered, that is, clearly know and solve it. (2) Recall knowledge points and determine solutions. On the basis of reviewing the meaning of the question, recall the relevant chemical concepts, basic theories, calculation formulas and other chemical knowledge, design the problem-solving ideas and formulate the problem-solving methods. (3) Correct problem solving and perfect answer. Express the idea of solving problems step by step, and pay attention to the standardization and integrity of solving problems. At the end of solving problems, we should pay attention to repeated checks to improve the correct rate of solving problems. (4) Expand the train of thought to find the law. This is the last link, and it is also the most easily overlooked and crucial step for most students. After a topic is finished, it will get twice the result with half the effort by combining the ideas before and after the topic is finished, and realizing some regular things from it. On the contrary, even if you do countless exercises, you can't consolidate your knowledge, train your skills and improve your ability.

2. Create a wrong file

At the end of each exam or during the study period, a file of wrong questions should be established, including wrong questions, reasons for wrong questions, corrections, inferences, and the situation at that time.

The process of chemistry learning consists of a series of stages. There are both connections and differences between each stage. Students should master the coordination between stages and levels in learning. Only in this way can they learn chemistry well, make good use of book knowledge, better integrate theory with practice, and learn chemistry well for our use.

Chemistry is a fascinating subject. However, because high school chemistry is complicated, difficult and chaotic, many students find it difficult to learn it. So how can we learn high school chemistry well?

How to learn high school chemistry well

First of all, listen carefully and take notes.

Good notes are the enrichment, supplement and deepening of textbook knowledge, and the display and refinement of thinking process.

Because there are many, fragmentary and scattered knowledge points in chemistry, in addition to listening carefully and thinking actively in class, on the basis of understanding, we should also write down the key points, difficulties, ideas and difficulties that the teacher said in his own language for future review.

Second, review in time.

Review is not only a simple review of knowledge, but also to consider the interrelation between old and new knowledge in your brain, reorganize and form a new knowledge system. Therefore, after class, we should review the contents of lectures in time, sort out and summarize the knowledge well, so as to make the knowledge comprehensive and avoid the phenomenon of learning more and more disorderly. For example, after learning the bleachability of SO2, compare it with the bleachability of chlorine water to find out the difference between them.

Third, learn to remember skillfully.

Because there are many chemical knowledge points to remember, it is difficult to memorize them by rote, so learn to memorize them skillfully. The commonly used memory methods in chemistry are: comparison method (often used for knowledge that is easily confused and interfered with each other. Such as isotopes, allotropes, allotropes and isomers, can be compared to deepen understanding and firm memory. ), induction, rhyming memory, understanding memory, experimental memory.

Fourth, practice diligently.

Practice is an important way to understand, digest and consolidate classroom knowledge. However, the practice should be targeted, not engaging in sea tactics, and aiming at mastering basic methods and solving problems. In the process of solving problems, we should pay attention to multiple solutions to one problem and summarize them to achieve the effect of doing one problem to the end. For example, the commonly used technical methods in chemical calculation include conservation method, relation method, extreme value method, average value method, estimation algorithm, difference method and so on.

Fifth, prepare the "wrong book"

The purpose of doing the problem is to cultivate the ability and find out the effective ways of your own weaknesses and deficiencies. Therefore, mistakes that usually occur should be corrected and recorded. When recording, you should analyze the causes of the mistakes and the correct ideas for solving them in detail, instead of simply writing an answer. At the same time, review frequently, so as to avoid similar mistakes in the future.

Sixth, attach importance to chemical experiments.

Chemical experiments can not only cultivate students' observation ability, thinking ability and hands-on ability, but also deepen students' knowledge and understanding of related knowledge, so we must attach importance to chemical experiments. When doing experiments at ordinary times, we should ask more why, think about how to do it, why to do it and what to do, so as to achieve the goal of "knowing why, knowing why".

In addition, to learn chemistry well, we should pay more attention to social hot issues and life problems related to chemistry, and be good at combining book knowledge with practice.

In short, as long as the learning method is correct, I believe students will learn chemistry easily.

I hope it will be helpful to your study ~O(∩_∩)O~

Please adopt ~O(∩_∩)O if you are satisfied. Thank you.

High school chemistry is so difficult to recite and understand. What should I do? There are several methods to calculate the problem ... difference method ... conservation method. There are also cross multiplication (A~B~C~D method ... I don't know how to say it) ... it will be good to understand it; Simple (the premise is to understand the equation)

Experimental questions are generally about the use of equipment, several experimental steps and errors (such as looking up and down). ..

Experimental problems are generally done more. ...

How to learn high school chemistry well? It feels hard. High school chemistry is a jigsaw puzzle. There are many fragments, and it is important to piece them together into a meaningful and complete figure. Medium-term memory is inevitable. But the knowledge difficulty of mathematics and physics is the lowest, and the thinking difficulty of chemistry is the lowest. I am a tutor of mathematical physics and a master of engineering.

Chemistry is too difficult. How can I learn chemistry well? At the beginning, I was exposed to chemistry in grade three, and I was very uncomfortable. Although the exams are all 90, I basically just read textbooks and listen to the teacher. Last semester was something like this. This is very basic.

It is not difficult to take the exam in the third grade (after all, it is stable first after the monthly exam). The key is to read more chemistry questions (not simple questions, of course) if you are interested. Think more, think more, and pay more attention to online chemistry problems. It's not hard to think for yourself. It is the most troublesome thing to say.

Chemistry in Grade Three is actually the foundation. . You can't imagine comparing those in Grade One. .

Expand your thinking, think more about problems and cultivate your interest.