-
A few people upstairs are all right, you can take a look at it. I will tell you from my experience of studying chemistry for ten years: chemistry is definitely not difficult to learn!
I'm just going to talk about my own feelings, and I hope it helps you.
First of all, the most important point, and the most critical point for beginners, although chemistry is a science subject, it is inseparable from memory, a lot of memory, which is much more than the memory of mathematics and physics. You can memorize chemistry in your early reading, focusing on concepts, formulas, chemical equations, properties of elements and compounds, and more. Without a certain amount of memory, it is impossible to learn chemistry well.
This also determines that chemistry can improve very quickly. Remember.
Secondly, there is the preview. This is the same for many subjects. Pre-study seems to take more time than others, and it is not necessary.
However, if you stick to it for a while, you will find that it is very important to prepare, and it takes much less time than not preparing, not understanding in class, and making up for it after class. In the early stage, it is enough to use only the textbook for preparation, and read all the contents of the textbook, including the main text, notes, legends, reading materials, unrequired chapters, etc., at least once. When you read, you don't have to be very nervous, just watch it like ** or comics ( o However, you have to think about it when you look at it, if you don't understand something, mark it out, read it later, think about it again, if you don't understand it in class, listen carefully to the teacher's description of it, and if you don't understand it, ask the teacher in time after class.
Also, for learning, you can't wait, you can't shirk, and in this case, there will be more and more things that you can't do. Ask the teacher in time, and ask your classmates for advice. In fact, the most important thing is not the so-called "method", but the real "doing".
As for the few questions you ask, there must be key points and difficulties in the tutorial book, how to organize and summarize can go to the teacher, the teacher likes to learn students very much.
Hehe, having said so much, I actually thought of my own ...... back then
I hope what I wrote is useful to you.
PS: Don't be unconfident.
-
The acid and alkali salts are mainly memorized, especially if you are in the third year of junior high school, which is to lay the foundation for high school, and I naturally learned it when I first learned it. Chemistry is a liberal arts subject in science, there are a lot of things to memorize, and there are many good inductions on the Internet, you search for it yourself, and then it is best to summarize it yourself, and each chapter lists the key knowledge that you think is in the book, and then adds exercises, which will deepen the impression. Don't worry, you'll find a way, I wish you success!
-
Read more books, multi-level chemical reactions, it is best to memorize on the basis of understanding, and finally do some exercises to become proficient in knowledge and integrate them.
-
The study of chemistry requires not only theoretical knowledge, but also practical knowledge. You can better apply theoretical knowledge to practice by participating in scientific and technological activities and laboratory practice. You can also learn about the latest chemical research results and applications through popular science books, science ** and other ways.
Chemistry is a very important discipline, which involves many aspects such as the composition, properties, and changes of matter, and is the foundation of other disciplines. However, the study of chemistry is also a difficult thing, because it requires mastering a large number of concepts, formulas, and practical operations. So, how do you learn chemistry well?
Here are some tips and methods for learning chemistry.
In short, the study of chemistry requires mastering basic concepts, understanding chemical formulas, paying attention to experimental operations, doing more exercises, and combining theory and practice. Only through continuous study and practice can we better grasp the knowledge of chemistry and improve the ability to learn chemistry.
-
When you first start learning chemistry, you will feel that you have no clue, it is difficult to remember element symbols, equations, etc., and you don't understand what it means at all, so you can only memorize them. But after surviving the beginning of this period of time, I will become more and more comfortable with the first 20 periodic tables, and I will gradually get in touch with some specific elemental properties, understand the laws inside, and know what those things represent. The knowledge of chemistry is not difficult to understand, the main thing is to memorize, especially in middle school, or it is said that chemistry is the most like the liberal arts science.
It is recommended that after learning for a while, build a network of knowledge, which can be organized into written writing, and the physical and chemical properties of each substance or element (equations are very important, and reaction phenomena should also be remembered), preparation (I don't know if you don't learn preparation in junior high school) and other detailed clarifications, and memorize all the knowledge points in the textbook. This will be less easy to forget, and it is not easy to fall behind the knowledge points, which is very effective in both junior high school and high school, of course, the wrong question book or something is also essential, after all, it is science, only if you see more question types, the exam can be scored. When I was in middle school, I often heard some students complain that it is difficult to speculate on the questions, but I memorize the properties of all substances, and when I read the questions, I naturally think of which substance.
I didn't do well in chemistry at the beginning, but after memorizing it for a while, I memorized the part I learned during that time very well, and the exam suddenly increased my score, and it was very easy to make up the previous knowledge after I got the trick, so it didn't matter if I didn't learn well at the beginning, I took the college entrance examination last year, and I deducted 2 points in chemistry, and now I am majoring in chemistry in college. In short, after the darkness is the dawn, and the dawn is not far away, come on, classmates. I hope it can help you.
I wish you an early improvement in your grades.
-
Mainly memory and contrast through association.
For example, when you learn an equation, you have to remember what substance it produces, you have to remember to modify one of the reactants, you have to compare similar chemical reactions, and you have to memorize special reactions.
-
The most important thing to learn chemistry is to memorize and summarize! Textbooks are important, and so is pre-study! When studying, you should associate the previous content and compare the related knowledge points!
After each lesson, don't read the book and write down the knowledge you have learned in the notebook! Summarize each unit like this at the end of the unit, so that you will understand a lot!
-
Chemistry: Mainly to memorize some properties, write equations, etc. Textual things, you can take a look at it and memorize it.
The key to theoretical things is to understand, and if you understand it, you will be able to draw inferences from one another. For example, in a chemical equation, in order to write a correct chemical equation, you must first write the chemical formula of each reactant and product, and in order to write the correct chemical formula, you must understand the valency. If you just rely on rote memorization, it is still easy to forget when it comes to the exam, and understanding is the most important thing.
So you have to memorize more practice questions, such as multiple-choice questions, the teacher gives you some special properties to choose, so more practice can invisibly help you remember. The effect of light memory is not good. The more you practice the nature of those special substances, the more you will remember.
The big topic is reasoning, writing equations, and with a good foundation, you will not be afraid.
In short, it is a process of accumulation, the more you know, the better you learn, so memorize more and choose your own method. Good luck with your studies!
-
Learning chemistry is mainly based on memorization and comprehension.
The so-called memory is not rote memorization, chemistry is a relatively simple subject in science, because chemistry is a very regular science, such as the periodic table of elements after the scientists of the past generations of sorting and arrangement, according to the protons in the nucleus of the element atom to arrange, has been more complete than the periodic table hundreds of years ago, easier to understand, just memorize the symbol and order of the elements, memorize the periodic table, you can through the atomic sequence, sort out the outermost electron number, It can be deduced when this element forms a compound with other elements, and so on.
And understanding is more important than memorization, understanding can help you remember, and not understanding is useless even if you memorize. The so-called academic tyrant is not higher than the average person's IQ, but is intelligent (many people think this is the same thing), and has strong comprehension skills.
1。Korean won can be exchanged at the airport, of course, if you want to be more cost-effective, you can exchange it in various so-called black markets, there will be Chinese and currency markings, where it is more cost-effective to exchange RMB for Korean won, I probably played in Seoul on the 18th, and the black market RMB to Korean won is about 1:184 there. >>>More
The main phenomenon of pregnancy is menopause, and symptoms such as nausea and vomiting generally appear around 40 days.
Of course it does, I don't know if you're a high school student or not. In high school, the connection between Chinese studies and biology can be seen everywhere. >>>More
To get rid of lice and fleas thoroughly, the following measures can be taken: >>>More
If he basically can't play, you can control his backcourt, then with his level after returning the ball, he can only go to your midfield, then you go to smash again, haha, a word "cool". If it's just going to **, I guess I don't understand the hatred, hehe.