How to review chemistry in junior high school, general strategy for chemistry review in junior high

Grasp the key points, the focus is on the acid and alkali salt part, the experiment of gas, and the calculation of the solute mass fraction in the solution, and the other parts pay attention to the mastery of basic knowledge.

The third year of junior high school is a very critical year, and candidates need to strengthen their weak subjects in this year, for example, many candidates are a little weak in chemistry, so they need to strengthen practice. So how do you revise chemistry?Let's follow me to take a look at the general strategy of chemistry review in the third year of junior high school!

1. Understand the test points of the high school entrance examination and consolidate the foundation

Aimless revision is not effective, so candidates must first understand the test points of the high school entrance examination and know what they will test, so that they can understand the direction of their efforts and establish the knowledge framework for review. Then candidates need to carefully study the instructions of the high school entrance examination, be familiar with the knowledge points of the examination and even master the knowledge points. After being familiar with the test center, candidates can draw a knowledge framework diagram, and use the knowledge framework diagram to organically combine various knowledge and formulate a clear review system.

Of course, the candidate's review is also inseparable from the guidance of science, for some special review lectures, candidates can go to listen to it, the teacher can systematically sort out each topic, provide solution ideas, and the candidates will be much simpler when they do the questions.

Second, take good notes

The content of junior high school chemistry is still very complicated, and candidates should carefully take notes in class, and according to the different knowledge points, candidates should classify and sort out. If it is an important knowledge point, candidates also need to mark it with a different color pen. For a better understanding, you can use some example questions, or write down some experience in doing problems.

After class and during breaks, candidates are required to memorize the notes they have taken.

3. Chemical equations should be kept in mind

Many chemistry questions are solved through equations, so candidates must memorize the equations. At the beginning, candidates can start from the periodic table, and after memorizing the various elements clearly, they can then memorize the more important equations. For example, the equations of acid-base neutralization reaction, oxygen to carbon dioxide, etc., can be understood by candidates through schematic diagrams, and then memorized.

Remember, you must write it silently, otherwise you won't remember it at all.

Fourth, comprehensively review all aspects

Whether the subject of chemistry can be taken well depends on the candidate's review in all aspects. Before the exam, candidates need to memorize the concepts, formulas, and practice types of textbooks, reference books, and notes. It is convenient to mobilize your knowledge base in time when you take the exam.

At that time, candidates can use some comprehensive calculation questions to test their review results.

The above is the strategy for the review of chemistry in the third year of junior high school. The main thing is to understand the test center, take good notes, memorize equations, and review comprehensively. It is hoped that candidates will make a correct review plan, review scientifically, and improve their grades in a big step.

I am a chemistry teacher in the third year of junior high school, and I am still conducting a round of exams, usually around May Day, I don't know how much you have mastered chemistry, you have to review according to your own situation. First of all, now the general review to the ninth unit solution, in the class will be the teacher will take you to review, at this time what you need to do is to systematically sort out the knowledge points of the unit, sort out some basic concepts and principles, sort out the knowledge framework on the notes, and form a system. Second, in the process of review, the teacher will definitely use a book of materials as a benchmark to give you a lecture, for the wrong questions, as well as the problems that the teacher repeatedly emphasizes in the process of speaking, copy them into a notebook, find the rules of this kind of topic, and form a text, so that you will be handy when you encounter this kind of topic.

Third, in the process of revision, for the types of questions you are not good at, you should find some topics to consolidate by yourself, practice makes perfect. Fourth, for a type of reaction and a class of problems, it is necessary to summarize in a timely manner, such as the basic reaction types, substance classification, and experimental devices, all of which need to be summarized by themselves. Hope it helps, I wish you success!

First of all, the basics of chemistry must be memorized. Because the knowledge points of the test are those, and everything is inseparable from them. (There are also many ways to memorize, and it is recommended to use the recall method for daily study or review, which is very good and conducive to memory and thinking training.)

Interested in searching for the "method of reminiscence". There are some knowledge points, more examples, and use to understand.

Secondly, you should do the questions carefully. The homework and exercises assigned by the teacher, each question must know the cause and effect, and what knowledge points are used to solve the problem, so that you will gradually use the knowledge points to solve the problem. Mark the questions you don't know and some special types of questions in the question, so that you can review them later.

In the questions, you will also learn some knowledge points.

Third, it is necessary to pay attention to the usual study of sorting out and classifying relevant knowledge. For example, what kinds of substances are flammable and reducible? What substances can be used as catalysts? The color, smell, and so on of various substances.

In short, on the one hand, we must "memorize", and on the other hand, we must be able to "use".

First of all, it is necessary to familiarize yourself with the textbooks, because many students prefer to teach and ignore the textbooks when reviewing, which is not advisable. Read the textbook once, do the corresponding questions, deepen your understanding, and pay attention to the connections between the knowledge points, but don't do it badly, just do it appropriately! The notes written by the teacher in class are quite important, understand them well, remember the concepts in the book, don't be sloppy, only remember to understand!

The conceptual is to memorize, and there are color reactions to remember, this is the key to doing inference problems, as for the calculation problems, you can only rely on understanding, the equation is better to write more and remember more, practice makes perfect.

The most important thing is to read the book and understand all the chemical equations in the book, as well as the reaction principles of various chemical materials and the phenomena produced by reactions. The knowledge in the book is very important. The rest of the time is spent doing exercises based on the book. Fill in the gaps.

The first is classification, which classifies different types of knowledge into several categories according to chapters, and each type of knowledge must be logically connected up and down.

Then summarize the knowledge of each category into simple things, such as principles, equations, etc., and memorize them.

Then do the questions separately for each category. Complete.

Junior high school chemistry is very simple, most of it is memorized, usually pay more attention to doing exercises, find the relevant departments of different content, and another point is that the knowledge is actually the more you remember, the more solid it is.

Keep the basics in mind, memorize the rolling melon well, and then memorize some rules, and some common chemical formulas!

Do the question, keep repeating, a good memory is not as good as a bad pen! If you encounter more problems, you will not be afraid.

If you are familiar with chemical equations, you can do the exercises, and chemistry is very simple, so you don't need to review it.

Those few important equations to master and be able to calculate and use, the first twenty of the periodic table to remember, and master their various properties! Master the basics! It's actually quite simple.

Memorize the reaction phenomena and equations that you have learned. Read more books and do more questions.