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In this case, it means that the basic knowledge is not proficient enough, the basic concepts may not be understood, and if you want to improve, you should do this:
1. Proficient in basic concepts and basic knowledge.
The content that the teacher has talked about in class, learn it again, explain the lecture content in your own words, and then all the questions in the textbook must be done, especially the example questions, every step must be explained clearly, and only by laying a good foundation can it be improved.
2. Apply the "Feynman Method".
The Feynman Method is recognized as the most efficient learning method in the world. The specific method is to simulate the process of teaching others what kind of knowledge you want to learn, and in this simulation process of teaching others a certain knowledge in every possible way, you must solve all the key points and difficulties, because only when you have a thorough understanding can you give a lecture to others.
For example, you can imagine that I have to teach the knowledge of "redox reaction" to my table tomorrow, I have to learn it myself, and then I have to think about what to tell others first, what to talk about later, and what precautions must be emphasized.
Hope mine is helpful to you, hope, thank you!
If you work hard, you will see the light.
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Physics and chemistry are both science subjects, and they can understand and explain the basic knowledge points, but they can't do the questions, indicating that they lack the ability to analyze the problem and apply the knowledge they have learned, and the way to solve it is to do more problems, starting from the most basic problems, and when doing the problems, we should review the teacher's solution ideas in the classroom examples, compare them with the problems they do, and slowly they will find the feeling, and the questions will be done, and then do the problems step by step. There is also a more critical point is to sort out the wrong questions in time, see what your mistakes are, what is the corresponding definition of the concept, re-check and fill in the gaps, and believe that through your own efforts, your grades will improve.
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I can understand physics and chemistry, but I can't do it, what should I do? It shows that we just have mastered it and are not sure, and we have not mastered the depth of this situation, you can only do more questions, think more, watch more and practice more, so that you can write, if you have a god to do the questions, more fluent.
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It is normal to be able to understand physical chemistry because the teacher talks about basic things in class. However, you should study the questions according to your own knowledge and the content of the teacher's lecture. It may be a little difficult at first, but it will be easier later on.
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The knowledge of physical chemistry is coherent, and if you understand this lesson, it does not mean that everything else is the same. It's also normal to not know how to do questions. This must be systematically reviewed, listened carefully, prepared well, and experimented. That's it.
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Listening may be quite good at doing questions, and once you do it, you won't, a phenomenon that many students have. In fact, this phenomenon is still a weak grasp of basic knowledge, start with the basic knowledge of the basic questions, and do it slowly, step by step.
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It's one thing to understand the knowledge points, you also have to do questions to master the test method of the knowledge points, which is the key to learning science, so you still have to do typical questions and master the application methods of knowledge points.
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Nursing chemistry can hear her do the questions when it will not be, it means that you have done fewer questions, do more and read more explanations, which may be better, but you really can't ask the teacher or classmates, and it will be better slowly.
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When I first started in physics, I could understand it, but when I did the questions, it was discounted. Later, I bought some materials, reviewed and consolidated the questions by myself after class, and reviewed them repeatedly after class, which was really effective.
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1. The basic knowledge of chemistry is composed of the properties of matter and the knowledge of chemical theory. The nature of matter is complex and there are many laws, so the study of chemistry should not only strengthen the memory of many specific small knowledge points like Chinese and English, but also do an appropriate amount of training like mathematics and physics, so as to improve the proficiency and adaptability of problem solving. Therefore, the quality of chemistry test results depends on two aspects:
First, a solid chemical foundation; The second is good test-taking ability.
2. Good study habits are the guarantee of efficient learning and good results. Looking at the reasons for the champions' good results, they are not relying on overtime and hard memorization. On the contrary, their chemistry learning is more relaxed and relaxed, which is beneficial to their good study habits.
Good chemistry learning habits include: pre-class preview, careful listening, timely review, independent homework, practice reflection, careful observation, discussion, summarization, etc.
The most preliminary thing is to master the knowledge points in the book. Because these are the syllabuses.
and the key points set at the time of compiling the textbook. This requires us to listen carefully and take good notes when the teacher is in class.
Next, it's time to get the practice done. As a science subject, practice is still necessary. Of course, we have to have the right way to get twice the result with half the effort.
When practicing, the first thing is to practice in a closed book, simulate the environment of the exam, and let yourself extract and review the knowledge you have learned during the practice.
After that, the exercises are corrected and summarized. For the right and wrong questions, you must understand why you are wrong; Don't take the right questions lightly. If you are a little unclear when doing the questions, and there is a factor of guessing correctly, you should let yourself summarize the test points of the questions at the end of the process and figure out the real reasons for being right or wrong.
Finally, chemistry is a discipline that has a wide range of applications in life. When you encounter certain chemical phenomena in your life, you can combine the knowledge you have learned, apply them in life, and recall their chemical principles.
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Chemistry is divided into two volumes, the first volume mainly learns the physical properties and chemical properties of substances, chemical symbols, chemical formulas, and chemical equations. The second volume is about the properties of solutions, the properties of acids and alkalis, some organic substances and human health. Here's how to learn:
1.Understand the physical and chemical properties of ammonium bicarbonate, oxygen, copper, iron, phosphorus, magnesium, water, carbon dioxide substances. Pay attention to the operation steps of chemical experiments. Mainly understand the following chemical experiments.
Ammonium bicarbonate heating experiment, basic copper carbonate heating experiment, iron rust determination oxygen volume fraction experiment, phosphorus combustion oxygen volume fraction experiment. Oxygen production experiments, carbon dioxide production experiments, water electrolysis experiments, iron oxide high temperature reduction, etc.
The knowledge of combustion, the three elements of combustion, combustibles, combustibles, ignition points.
2.The properties of the acid-base salts of the solution. The principle of metathesis reaction, the conditions for the formation of precipitation.
3.Properties of organic matter, sugars, oils, proteins.
Organic materials: plastics, synthetic fibers, synthetic rubber.
Inorganic materials: properties of steel, alloys, stainless steel.
Chemistry is mainly based on memorization, and it is necessary to do more extracurricular exercises to increase knowledge.
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The solution to the problem of not understanding chemistry in junior high school is as follows:
1. First of all, listen carefully to the lectures, follow the teacher's lecture ideas, and consolidate the knowledge points that you have missed before for intensive learning.
2. Do questions according to the knowledge points taught by the teacher, and consolidate and review the knowledge by doing questions.
3. Strengthen the memory of the knowledge points that are not well remembered, and take good notes to review and remember many times.
4. In junior high school chemistry, you must read more and memorize more and memorize the knowledge points firmly.
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It's like this at the beginning, don't give up, maybe you don't understand it very well now, and when you look back, it will suddenly become clear. I studied chemistry in college, and now I look back at the chemistry that confused me in high school because I was rare and weird, and it wasn't even worth mentioning, so please stick to it.
If you think about it this way, high school knowledge must be easier than college, and you have to be confident in yourself.
Listen carefully in class and take notes. Memorize the test points, such as formulas, or some hidden formulas.
Make a list of knowledge frameworks, write what the total knowledge points are first, then write out the branches, and then infinitely subdivide them to the most basic points, and then you can know which point will not be when you summarize. Won't be on the phone, or ask the teacher.
It's like playing a game point skill tree, if the most basic ones are not unlocked, how to unlock advanced skills.
If you are not familiar with the content of the column knowledge framework, you should write the content in detail.
Then, when reviewing or the content is more familiar, you can omit the content of the branch that is ripe.
The former can be studied in detail and systematically. The latter can increase efficiency and avoid inefficient repetition.
Wait until you can list the complete knowledge framework. Explain that you have mastered the general situation, go to the questions to verify your results.
When I encounter a question that I can't know, I look at the answer, and then understand, why I do it, is there any knowledge point in this question that I don't know, and then can I understand this knowledge point, can't it. Once you understand it, make another frame, or add it to the notes you wrote before.
Will I do this kind of question again, you can try to change the digital content of the question yourself and see if you can make it. This is very efficient and can quickly grasp the question type.
It's important to take time out to preview and read your textbooks and resource books first. You must first have a general understanding of what the teacher is going to say. There is also persistence, if your foundation is relatively poor, you must persevere, it is impossible for you to do this for the first time to have obvious results, and you must insist on pre-study every day.
It is recommended that you review the previous content more, so that you also know that the teacher's lecture involves the previous content.
To listen carefully, you try to concentrate on following the teacher's thinking, don't always think about taking notes, you just need to remember a little bit of what you want, or what you don't have in your reference book, the key to listening to the class is the word "listening".
Preview, review, correct mistakes, consolidate, improve, ask questions, think more, think well.
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Ask teachers and classmates for advice, understand the questions as soon as possible, preview the content of the next class, write down the questions you don't understand, and listen carefully during class.
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Start the analysis from NACL, go from shallow to deep, read books by yourself, and then connect with alkali metals, halogen elements, and then expand to other group elements, so that you can have a good understanding of the periodic table of chemical elements, so that chemistry is almost learned. As for dissolution, calculation, etc., then it is more mathematical, and there are more problems.
In short, there are still a lot of things to remember in chemistry, so you must be organized, pay attention to the personality of each thing, and understand the reasons.
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Because school has just started.
Just hold on.
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Do a little more chemistry questions. Remember to prepare.
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My learning style is not suitable for you, but you can also refer to it, I am now in my third year of high school, I don't write chemistry homework since my sophomore year, and I don't listen to classes since the second two months of the second semester of high school, but I don't have a lot of grades as you think, on the contrary, I am a representative of the chemistry class, from the first year of high school to the third year of high school (it is an abuse of power, I don't remember my name every time I list), the first in chemistry, I usually don't listen to anything, because I don't understand, I just read the book two weeks before the exam, To summarize it myself, there are actually a lot of things that I thought of in the exam, such as the chapter on the galvanic cell of the electrolytic cell, and the equation for the redox reaction with the transfer of electrons, which I didn't understand at all when I read the book, but when I read the exam I read the questions twice. Students say that chemistry is difficult, I think it's really simple, because as long as you remember those equations and all kinds of colors (color reaction, solution color, substance color, etc.), your brain is turning a little wider, don't be surrounded by the problem, the way to do the problem is not to memorize the problem, but also to draw inferences, make this problem, and then use the method of this problem to other problems, some questions are not just one method, some are troublesome and some are simple, but no matter how troublesome you have to do all the methods you know, First, you can know other ideas for this problem, and second, you can be proficient in other methods. There are often many conditions implied in the questions, which are not directly given, it depends on whether you can use what you have in your head.
For example, a cup of colorless solution, after evaporation, the remaining solid will be reacted with flame color, and the flame is found to be yellow, do not blindly determine that this is sodium salt, and may also contain potassium salt, because the flame color of sodium salt is yellow, potassium salt is purple, and the flame color of potassium salt is not as bright as that of sodium salt, and it is easy to be covered by the flame color of sodium salt, so it is also observed through blue cobalt glass. Don't be caught up in the rigid questions in the book.,The important thing is that you can master the method.,Well,I'm not good at linguistics.,It's a mess.,It's just your own code.,I hope the landlord can get some hints.。
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High school chemistry is and comes.
It's completely different when I was in junior high school, and you just need to memorize it if you have bai in junior high school
But high school can't zhi, you just need to listen to every dao class, you can do whatever the teacher tells you to do, and then it will come naturally, maybe some will not be able to do it at first, try to ask the teacher as much as possible!
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