Chemistry in the third year of junior high school seems really difficult to understand?? What am I g

No. In the beginning, I was always poor, and it was common for me to be at the bottom. But I also got 98 in the high school entrance examination.

First, we must study seriously. If you can't ask the teacher, you can ask the teacher for analysis after you send the exam papers, and you can also ask the teacher if there are any suitable practice questions to do, don't be embarrassed, that's how I came over. If they scold you, you think it's for the sake of getting better anyway.

It is important for the teacher to help you. There's still a year to go, and it's a must.

Second, don't be afraid of repetition. I'm just, if I don't know the valence, I ask the teacher to do it (and then I get addicted.) The chemistry in the third year of junior high school is repeated, and finally you make wood, and you will succeed! (Alas, sad).

Third, it really can't be done, and finally find a gentle, responsible, and experienced teacher to make up for you. This is the last big move, but if you follow along, there should be no problem.

Fourth, you can look up the mantra on the Internet about memorizing things, smooth talk, formula summary, and key definition summary. Usually memorize it well, slip it before the exam, and it's almost the same.

You must not study chemistry by yourself, you must find a teacher, and the teacher will help you design a plan and goal that best suits you.

If there's anything else you can talk to me privately, or maybe I'm a freshman in high school.

Suddenly it turns out that the bounty score is 0. Hehe, it's time to make friends.

Don't be discouraged and learn by heart. In fact, chemistry in the third year of junior high school is very easy, and if you go to high school, you will find that all you have learned before is common sense ......Listen carefully in class, understand the textbook, and do it with a set of practice questions. Be confident and good luck.

In fact, the overall chemistry knowledge in junior high school is not very difficult, the coherence of the knowledge system is strong, and the knowledge is closely linked, so it must have a solid foundation to achieve good results, such as: precipitation table, valence, chemical formula, equation, reaction conditions, generation conditions and the most basic physical properties, if you know these, I think your grades will not be too bad, because in chemistry, there are few particularly deep questions.

Chemistry in junior high school is relatively simple, but most of it is memorized, and in high school you will find that they are regular. It's like when you're just starting to learn English, everything is hard at the beginning, and the best way is to communicate more and memorize more.

Chemistry in the third year of junior high school, depending on how well you learn, if the foundation is poor, it is best to learn from scratch, the foundation of chemistry is very important, it is difficult to learn at the beginning, and it is necessary to memorize it at that time, I remember that I heard my sister say that chemistry is difficult to learn during the summer vacation of my second year of junior high school, and I studied it very seriously at the beginning of the third year of junior high school, and memorized those elements with all my might, and you should pick and do it when you do the topic, ask the teacher more, and then summarize it yourself, the exercises given by the teacher are done, and the question types are summarized, and chemistry is almost always the first, anyway, the foundation is very important!!

Landlord Actually, I'm a person who has come over When I was just in the third year of junior high school, chemistry was also very poor, and I didn't have an effective way to learn chemistry, and I couldn't understand many chemical reactions and phenomena (I had a habit of never liking to ask the teacher if I didn't understand the questions, and I would rather ask my classmates, although I knew that it was not good, but I don't know why) When I took the high school entrance examination, chemistry was also a subject that pulled points, although I failed the first high school entrance examination, but it was not because of chemistry But I didn't paint the English answer sheet, and it also revealed that my chemistry foundation was not solid So I repeated it for another year, and this year, I was going to get a strong interest in chemistry, and I was going to learn the basics of junior high school so that I could study chemistry in high school, and luckily, this chemistry teacher was very close to me, and I enjoyed the teacher's class, and I felt very relaxed when I was listening to the lecture, and in fact, when you were studying chemistry, you should have a strong interest in it, so that you wouldn't get bored (like I did when I was studying physics), and again, you buy two more chemistry reference books, one for the whole tutorial textbook It is mainly based on textbook knowledge The other is the Chemistry Olympiad book I bought the junior high school chemistry competition - Shanxi Taiyuan Publishing House I have a soft spot for this book, and I am especially grateful for this book, which makes me fascinated by chemistry This book will teach you a lot of things that you can't learn in the classroom Finally, when the exam is about to come, you will buy a few sets of papers to do and do it, and there will be no problem If you want to learn chemistry well, the most important thing is - interest, observation, experiment, memory, and flexible application.

Mainly based on memory, but not rote memorization, around the book, back and forth, mainly according to the material nature of the category, looking for the law to remember the constant thinking of the law, and simplify.

To put it bluntly, the knowledge starts from thin to thick, and then from thick to thin.

A process of continuous refinement and synthesis.

I'm a high school student, and I've forgotten the learning methods of junior high school, so I shouldn't have to bother like I said, just do a few points, remember, it's right to follow the teacher in junior high school, after all, junior high school is too simple.

Junior high school chemistry is an introduction, and from my experience, junior high school chemistry can be understood on the basis of memorizing and memorizing, and it will be easy to learn!

Very easy. (I'm a junior high school chemistry teacher).

It's too simple, there's no point, just listen carefully and take each paper seriously.

Well, I got 95 out of 100 in the high school entrance examination

Junior high school chemistry is mainly about chemical equations and valency.

There is also the phenomenon when a chemical reaction occurs in a substance.

Chemistry is the easiest subject to take in middle and high school. The first thing to do is to overcome the fear mentality. Chemistry in junior high school has very little content. Write down a table of the sequence of chemical activities, several common insoluble substances, and several common chemical straines. Nothing more.

This is the liberal arts in science, and there is a lot of knowledge to memorize at the beginning, so as long as you understand it, it will be easy to learn to form systematic knowledge.

In fact, it is not difficult, the key things depend on memorization.

The book should be memorized, do some questions to consolidate, not too urgent, because the time is certain, we can only get the highest benefit in a limited time, it is best to grasp the general basic knowledge, so there are a lot of test scores, and the basic points of the high school entrance examination account for a lot.

Chemistry is half a liberal arts, hehe, the stupidest way is to memorize it, after all, the knowledge points are not too much If the foundation is okay, now you can start to read the basics and return to the textbook. Good luck.

Be sure to memorize all the equations, as well as the physical and chemical properties of each substance, with the same upstairs, there is a review outline on the Internet, and it is still too late to memorize it hard.

1. Learning chemistry is the same as learning other courses, pay attention to listening to lectures in class, preview and review in class or after class, and learn each knowledge point thoroughly. But each course has its differences: for example, if I didn't take a Chinese class today, I can make up for it tomorrow after the class, while chemistry is a ring, such as:

If you don't learn decimal addition and subtraction first, you won't be able to, so you must learn each knowledge point thoroughly.

2. Students are most afraid of making mistakes in the exam, and if they make mistakes, they must analyze and summarize. I summarized the four situations in which points are lost: one is that you will do it, but you are careless and do it wrong.

The second is that you can't think of how to do it for a while, and you will do it afterwards. The third is that you don't have enough time, give a little more time to think, and maybe you will do it. The fourth is that you can't do it, you can't do it if you sit there for 10,000 years.

The solution is as follows: First, be careful in the future, and be careful. Second, in the future, we must do more practice, the so-called "familiar with 300 Tang poems, can not compose poems and chant".

Three, be able to use time! Be quick! But it's fast and error-prone!

How can it be fast? There is only one way: practice more!

The fourth is the most terrifying! There are two scenarios for this. One is that you can't do it because you haven't learned it well and can't do it; Another situation is that you have learned well, but you lack the ability to draw inferences and comprehensively, and you can't do it.

Most of the students have the second problem. It makes sense for the teacher to come up with such a question. The teacher will never come up with the questions that everyone will never do, and the teacher is testing everyone's comprehensive ability.

You have to make a few more detours in your brain, think about a few more whys, and you can make it.

Good luck with your studies! Thank you! You have to believe in yourself! You can do it!!!

Actually, it's okay, as long as you read more tutorial books, it should be quite simple, and the total score is only 150 points, and you can work harder in other subjects, and it's definitely no problem.

Good luck with your results!

In junior high school, the main way to learn chemistry is rote memorization, and if you memorize some typical properties, chemical formulas, and chemical equations, it is difficult to get a high score! To sum up, it is to memorize carefully, and if you have more questions, you will definitely be able to learn well! The premise is not to be afraid of difficulties when you listen to others like "pony crossing the river", and you will lose interest, that is, it is really difficult!

I'm sure you'll learn well!

Chemistry in junior high school is really easy, if you think chemistry in junior high school is difficult, then your high school chemistry will have a big problem...

As long as you work hard and maintain your self-confidence, chemistry will be your score for the high school entrance examination.

The third year of junior high school is the introduction to chemistry, and everyone will say that it is difficult at the beginning, just as computers have just begun to become popular, everyone also finds it difficult. If you really get in, you don't feel that it is difficult, so getting started is the key, you must preview the textbook yourself before the teacher lectures, even if you can't understand it, read it twice, and when the teacher talks in class, you can understand it in your heart, and you must review it after class. If you continue this method, you will definitely be on your way to becoming a master of chemistry.

I wish you success Here I have to say a few more words, I used to be in junior high school chemistry can only test about 30 points, I belong to the kind that does not like to read so do not open the mind, and then recommended by classmates to find a teacher to tutor it, I don't know if the teacher is good, or because of the money to ask the teacher to talk so listen very seriously, anyway, the result is that the grades are rising, I scored 97 points in the high school entrance examination, until later I studied applied chemistry in college.

There's nothing you can't do, only what you don't want to do. You must be careful in learning chemistry, and a person who can score 100 points in chemistry must be a careful person, because chemistry questions are obtained with 1 or 2 points.

That's when your sister feels difficult, and I think that chemistry has just begun, everyone starts the same, and hard work will win.

In the solubility curve, the point on the curve represents that the solution has reached the saturated state at that temperature, and the area above the curve indicates that the solution is saturated and there is still undissolved solute in the solution.

The area below the curve indicates that the solution is unsaturated.

Most solid substances absorb heat when dissolved in water, according to the principle of equilibrium movement, when the temperature increases, the equilibrium is conducive to moving in the direction of heat absorption, so the solubility of these substances increases with the increase of temperature, such as kNO3, NH4NO3, etc. There are a few substances that are exothermic when dissolved, and generally speaking, their solubility decreases with increasing temperature, such as Ca(OH)2, etc.

There is also an explanation for the problem that the solubility of Ca(OH)2 decreases with increasing temperature, calcium hydroxide has two hydrates Ca(OH)2·2H2O and Ca(OH)2·12H2O. These two hydrates have a greater solubility and anhydrous calcium hydroxide has a low solubility. As the temperature increases, these crystalline hydrates gradually change to anhydrous calcium hydroxide, so the solubility of calcium hydroxide decreases with increasing temperature.

1 The solubility of most solid substances increases with increasing temperature, and the curve is"Steep ascent type", such as potassium nitrate.

2 The solubility of a few solid substances is very little affected by temperature, and the curve is"Gently ascending", such as sodium chloride.

The solubility of hydrated lime decreases with increasing temperature.

3 The solubility of a very small number of solid substances decreases with increasing temperature, and the curve is"Descending type", such as calcium hydroxide.

4 The solubility of gaseous substances decreases with increasing temperature (volume is expressed in the ordinate), and the curve is also"Descending type", such as oxygen.

The change of the ordinate represents the change of solubility, and the change of the abscissa represents the change of temperature, and the solubility of several substances at different temperatures is marked on the graph, and the curve of the solubility of the substance with temperature is obtained, which is called the solubility curve.

You can buy a tutorial book and read it carefully. Very fine. In doing a few middle school questions, such as the last question of the multiple-choice question in Anhui Province over the years, it is all about solubility images.

Let me tell you that when you go to high school, you know that junior high school chemistry is a natural science

Children, kindly remind you that the chemistry knowledge you see in junior high school is pediatric, and the worldview will collapse in high school, and the high school party said that it is ...... to study hard

It's not difficult, junior high school is easy, but high school is a bit difficult.