Impressions of junior high school chemistry? How it feels to finish chemistry

I've studied chemistry for so many years (I didn't expect it to be chemistry again in college, o(o) It feels like it's a word——— memorizing Chemistry is not like high math is not like physics Sitting there thinking The main thing is to memorize things Chemistry in the third year of junior high school is actually the most basic knowledge, memorize it... That's how I came over Teacher Shenma said that the knowledge points in my head should be turned into a network and chapters It's all empty talk You can only memorize everything you need to know When others mention a certain knowledge point, you may have associations and become a network The most important thing is to memorize more in order to summarize the accumulation of skills and make a qualitative leap In fact, this is my idea of chemistry, which is suitable for chemistry at all stages, especially high school and college, and is even more applicable to the third year of junior high school. Chemistry in the third year of junior high school is the most basic thing, just like 1+1=2 in mathematics, you must learn and memorize well in high school to keep up.

Oh, I feel a lot of emotion, I hope it will be useful to you.

Chemistry, at first it was very simple, no, it was super simple. Later, it is quite difficult for girls to learn what acid, alkali salt, and solubility, but as long as you persevere, don't give up. You will find a "shortcut" to chemistry, in short, you can't reject him.

I just think it's quite interesting.、、Although the grades were not very good at first because I didn't listen carefully to the class.、、

But now I really like chemistry.。。

Chemistry in the third year of junior high school is super easy! After learning it, I felt that chemistry was very interesting and had a great interest in chemistry!

Chemistry in the third year of junior high school is very basic and very important, and if you learn well, it is not a big deal, and if you don't learn well, a summer vacation is enough to make up for it. Don't put it off until high school to make up for it.

As long as you put in 70 or 80 percent of your energy, you will feel that it is relatively simple, and in retrospect, you will feel that it is not a problem, and you will enjoy learning.

The difficult ones won't, the will not be difficult The calculation questions are a little difficult, do more practice, and listen carefully in class It's absolutely OK.

As long as you listen carefully in class, you'll be fine. It's all about understanding, but the chemistry competition is not easy. Pay attention to the details of the experiment.

It is simple, but the knowledge points are relatively detailed, and it needs to be summarized well.

It's so simple, you can get a score of more than 98 by reading the book twice.

Chemical equation.

How to learn chemistry in junior high school:

The first step is to make sure to prepare for the class and make sure to take notes.

If you want to learn chemistry well, you must first understand what this course is about, so. Before the lecture, you must prepare, in addition to the preparation. In addition to reading the new content carefully, you should also mark it on the places you don't understand.

And try to make a textbook, the corresponding workbook.

If you don't understand something, you can leave it empty first, and do it first. Finally, on the second day, the teacher will focus on some important points in class, and so on. You can listen to those things, where you know, where you don't, and mark down the things you don't understand, and take notes, and redo the workbook.

This will not only help you with your future revision, but also help you grasp the key points. It can also prevent distraction in class, etc. However, when taking notes, you must listen to what the teacher said clearly, and don't make mistakes, otherwise you will write wrong during the exam, and you will still have no points.

The second step is to constantly recall what the teacher has said and do a good job of reviewing the homework.

After class, you should read the new content of the day several times, and then do your homework when you go home, and if you don't know something, you will re-read the textbook. Then, after completing the homework, read the textbook again to help consolidate the revision.

The third step is to read the textbook thoroughly, to know what the textbook is written and to memorize it in your mind.

Take the textbook as the main review route, and then start reading the textbook and understand all the content in the textbook. This is the foundation of learning chemistry well. After reading all the textbooks, you also need to read more chemistry books after extracurricular tutoring, which will also help you improve your score in future exams.

Periodic table of chemical elements.

The fourth step is to cultivate chemistry as your own interest.

Chemistry is a subject that mainly does experiments, so we all need to carefully observe how the teacher's demonstration is done, and then we repeat the experiment. Experimentation is a good basis for practice. So.

Some people like experiments, for example, I like to do experiments, so I like chemistry more. If you don't like chemistry, it may be because it's too difficult, and you have to learn to experiment with your heart so that you can cultivate it as your interest.

The above are some methods and skills on how to learn junior high school chemistry well, in fact, chemistry is not difficult, it is experiment-centered, as long as you learn the experiment, you will remember what reactions will follow.

Chemistry in junior high school is nothing more than bai

It's a book with a lot of words, and zhi has been.,I think I'll read the Chinese word dao back.,Look at the things on the book that haven't been answered before.,Just get familiar with it.。 Chemistry is a course in life, and it is not difficult to master the junior high school part of the course by paying more attention to the details of life. I don't have that much nonsense here, if you have specific questions, please feel free to ask.

Chemistry in junior high school is generally not difficult, but until I am in my third year of high school, I don't think chemistry is so difficult. In junior high school chemistry, if you want to learn it well, it is very simple, memorize some important chemical equations, the properties of common substances (physical properties and chemical properties), and the first 20 elements of the periodic table in order. In short, chemistry in junior high school is basically a memorization thing, and there is very little thinking.

Actually, chemistry is not difficult. (Junior high school chemistry must be learned well, and the foundation of junior high school chemistry is very important for high school chemistry, and it is very related).

When I came to junior high school, I got full marks in mathematics and physics, but I always failed in chemistry, and then I found out, because I was too lazy, I couldn't sit in the back and couldn't see the teacher's experiment, so I wasn't interested, I couldn't remember the colors of the experiment, I didn't remember the chemical formula, I didn't like to do exercises, and I scored 36 points in the first half of the semester, which was very embarrassing, and in the second half of the third semester, I tried to do the chemistry training questions from scratch, and I did more exercises, and I didn't deal with it like that in class, and I quickly caught up, and I often took the 90 exam.

6 or 7 points, you don't have to worry about chemistry in junior high school, it's still very simple, listen carefully, do more exercises, and it's OK.

First of all, I have always loved chemistry and have a high enthusiasm for learning it, so if you want to learn chemistry well, you should not have any resistance and fear of it, you must believe in yourself, as long as the method is done properly, you can learn it well.

Chemistry, as a science subject, is the subject that everyone has the shortest contact time from primary school to the present, so they may not have developed a better learning method. It is different from other science subjects in that it requires a lot of effort in memorization, and various chemical formulas, reaction principles, and properties must be firmly grasped, which is the basis for doing problems. So how do you memorize the complex chemical formulas?

This requires mastering certain skills, starting with people's memory ability, which is much higher than the memory of words and numbers. It is difficult to grasp it with only the characters in the notebook, so you must carefully observe and memorize the various experiments done by the teacher during class, such as checking the color, reaction phenomenon, state and smell, which are very helpful for memorizing chemical formulas and properties. Trace.

Once you have mastered the basics, you need to apply them to the questions, and as a science subject, it also has unique problem-solving skills. It can be roughly divided into extreme value method, average value method, excess calculation, hypothetical method, etc., and the solution of such methods is not more than fine, as long as the method of solving this kind of problem can be fully understood, and then it will not be separated from it. Personally, I think that experimental questions and inference questions are a major difficulty in doing problems, and this kind of questions are mostly characterized by novelty and strangeness, so to do this kind of questions, we should fully explore the hidden conditions in the questions, and introduce substances through the properties given in the questions, which requires us to keep in mind the characteristics of various substances that the teacher talks about in class.

Don't panic if you encounter a chemical reaction that we haven't seen before, there will definitely be hints or reaction principles in the question, as long as you think calmly, you will definitely be able to come up with the correct answer.

The above is a little bit of my experience in learning chemistry, if you still have a good method, you may wish to share it together. I hope you find all of this helpful.

I'm not a teacher, but from a student's point of view, you can use something funny, such as using chemistry to tell jokes about it in class to arouse students' interest. There can be different levels of requirements for different students.

You are the teacher who criticized you, and asked you to write it

Chemistry is a new subject in the third year of junior high school, and it is a new world for junior high school students. From matter to molecule to ion, learn about the microscopic world step by step. I remember that the first chemical equation is to heat potassium permanganate to release oxygen, and the memorized equation is memorized according to the letter:

kmno4 arrow k2mno4+mno2+o2 ", learn to know the periodic table later, know the valency, and understand how to memorize the equation. How to learn chemistry well, I think there are the following points:

First: The teacher said that chemistry is the foundation of the foundation of the third year of junior high school, and many things must be memorized, just like learning multiplication must first memorize the ninety-nine operation formula, so it is very important to work hard to memorize the basic knowledge such as the periodic table and valence.

Second: be sensitive and remember some fixed and special phenomena. For example, the gas that precipitates in the clarified lime water must be carbon dioxide (only for the third year of junior high school exam questions), the color of the indicator represents the pH value, and the common precipitation is CaCO3 Baso4 AGCL, etc.

Third: Do more questions to strengthen your proficiency. There is so much knowledge of chemistry in the third year of junior high school, it is not complicated or profound, and it is necessary to test that little thing repeatedly, and everything changes from its origin, and the proficiency has improved, and the chemistry exam is naturally not a problem.

Fourth: It is important to remember some important experiments, including the purpose of the experiment, the steps, the instruments, the operations, the phenomena and the equations, and the position, direction, and reasons for the connection or placement of some special instruments. For example, when heating a certain solid, because there is water vapor in the product, the test tube should be placed obliquely when heated (I forgot which solid it is, and the landlord added it himself).

In short, if you want to learn chemistry well in junior high school, you must memorize the basic knowledge firmly, remember it clearly, and take the exam easily.

The above are some of my experiences in chemistry, I hope it will be helpful to you.

Another thing: I graduated from junior high school for more than ten years, and now it belongs to memories. If you're a junior high school student, change your tone

Equations and chemical formulas cannot be memorized Our teacher told us to learn chemistry as a game to feel the mystery of the colorful chemical world With formulas Potassium, sodium, ammonium, nitrate, tetrasalt soluble hydrochloride in addition to silver chloride sulfate in addition to copper sulfate Most carbonates are insoluble monovalent hydrochloride, sodium potassium, silver divalent oxygen, calcium magnesium, barium, zinc trialuminum, tetrasilicon, pentavalent phosphorus Variable valence is not difficult Copper and mercury bivalent are the most common Hydroxide nitrate perchlorate Valence is negative in mind Carbon, sulfur, manganese, and two do not need to ask Ammonium is one or three is phosphorus Hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, neon, sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chloride, argon, potassium, calcium.

Learn chemistry well and prepare a "mistake book" The purpose of doing chemistry questions in junior high school is to cultivate ability and find an effective way to find your weaknesses and deficiencies. Therefore, the chemistry mistakes in the third year of junior high school should be corrected and recorded. When recording, you should analyze the reasons for the error and the correct solution idea in detail, and do not simply write an answer.

At the same time, it is important to go through the review frequently so that you can avoid similar mistakes in the future.

Recommended reading: Summary of important knowledge points of chemistry in the third year of junior high school.

Emphasis on chemistry experiments

Chemistry experiments in junior high school can not only cultivate students' observation, thinking, and hands-on skills, but also deepen their knowledge and understanding of relevant knowledge, so they must pay attention to chemistry experiments. When doing experiments, we should ask a few more why we are trembling, think about how to do it, why we do it, and what else we can do, so as to achieve the purpose of "knowing what it is, and knowing why it is so". In addition, it is necessary to study chemistry well, 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 that students will easily learn chemistry well.

Learning experience of chemistry in junior high schoolBe diligent in previewing, good at listening to lectures and taking notes

If you want to learn chemistry well in junior high school, you must first understand this course. For this reason, you can use the summer vacation to read through the chemistry textbook first, maybe the interesting and lush chemistry textbook will deeply attract you. In addition to reading the content of the new lesson carefully, you should also mark the areas you don't understand, and try to do the exercises in the textbook.

In this way, with questions and difficulties, the efficiency of listening to the class will be greatly improved.

There is a lot of chemistry content in the third year of junior high school, and the teacher focuses on the key content when lecturing. Therefore, it is necessary to listen carefully to the class and take notes carefully, which is not only conducive to reviewing after class and mastering the key points, but also can effectively prevent "distraction" during class. However, when taking notes, it is necessary to pay attention to the method, and on the basis of listening to what the teacher says, you must remember the key points, difficult points, doubts, and things that are not in the textbook.

Review often and memorize more

After the third year of junior high school, you should review in time and do your homework carefully, which is an important part of learning chemistry well. Revision can be done after class, after week, unit, chapter, and comprehensive. Methods of revision include retelling, dictation, and making connections.

Knowledge can only be firmly grasped through multiple revisions.