-
At first, you need to be interested and confident that you will be able to learn well.
Then be patient, read the chemistry book for the third year of junior high school by yourself, read it several times if you don't understand, and practice the after-class practice questions in the book. I still don't know what I know to write it down and ask others or ask the teacher at the beginning of the school year. You don't have to force yourself, after all, you see it yourself.
Learning method: Before class: Preview it, even if it is to take a look at the topic, but after reading the topic, you must think about the topic.
If you can't think of anything, you must read the content. Some teachers start to talk about the content as soon as they start the class, and they don't pre-study it.
It's easy to understand.
Class: Listening: Make sure you get enough sleep to have good physical strength to listen to the class. When listening to the class, you should be a little ahead of the curve, and you should be self-conscious when you hear what the teacher says.
I want to connect with life. Just listening and not thinking, not listening carefully.
Information. Active: Actively do hands-on experiments, which can help the teacher, or do experiments in the lab that are not learned in the book.
After class: Practice: Consult the teacher about the important and difficult points of the high school entrance examination, and then you can ask the teacher if there are any good questions to do. To more.
Practice questions to consolidate knowledge. Don't forget that chemistry is the liberal arts of science!
Review: Pay attention to the differences in chemistry knowledge, and practice your ability to generalize and classify experiments. Multi-back, especially the periodic table, the valency of the elements, and so on.
-
At first, the chemical formula is memorized, and it doesn't matter. Slowly, you will feel it and find a pattern.
In daily life, it is best to pay attention to whether there is any knowledge that has been taught in textbooks, so that you will be more interested.
-
Ask a tutor to familiarize him with it first, or find some chemical reagents that change color and react, so that he can understand the magic of chemistry and become interested, the key is his own interest in learning!
-
I usually play casually. But once a new course is opened. No matter what's going on around you. Don't listen to it. Listen attentively.
-
Chemistry, as a comprehensive science, may be a relatively abstract and difficult subject for junior high school students. However, as long as you master the correct study methods and skills, you will greatly improve your learning efficiency and learn chemistry quickly. Here are a few methods and tips for learning chemistry that I have summarized:
1.Understand the basic concepts and principles of chemistry.
The foundation of chemistry learning is to master the basic concepts and principles of chemistry, such as elements, compounds, chemical bonds, chemical reactions, etc. Beginners should first understand these concepts and principles and grasp their definition and nature.
2.Accumulate experimental experience.
Chemistry is an experimental science, and experiments can help students understand chemical principles and phenomena more intuitively. Therefore, students can accumulate experimental experience by participating in experimental practice, doing experimental problems, observing experimental phenomena, etc., so as to deepen their understanding of chemistry knowledge. Fu Li.
3.Create an environment for chemistry learning.
Creating a good learning environment can help students learn chemistry better. Students can listen carefully and take good notes in class; In your spare time, you can read chemistry books, do chemistry exercises, participate in chemistry interest groups, etc., and immerse yourself in the atmosphere of chemistry learning.
4.Develop good study habits.
Developing good study habits can effectively improve learning efficiency. Students should have a study plan that ensures that they stick to their study time each day and can review regularly. In addition, concentration, patience and carefulness, good thinking, analytical and problem-solving are also good personal qualities required for chemistry learning.
5.Find the joy of learning chemistry.
Learning chemistry can be fun and fun, as long as you can find the fun in the learning process, chemistry learning is no longer boring and boring. For example, interesting chemistry experiments, vivid chemistry examples, and colorful chemistry knowledge can help students better understand and master chemistry knowledge.
To sum up, chemistry learning requires good basic knowledge, experimental experience, and correct learning methods. As long as you maintain good study habits and give full play to your learning potential, I believe you will be able to learn chemistry quickly.
-
How to learn chemistry in the third year of junior high school:
First, we should pay attention to basic knowledge.
The "sentence" in chemistry is the "chemical formula": the "letter" is the "element symbol": and the "phonetic transcription" is the "valency".
These are the basic knowledge that we must be proficient in learning chemistry well, and mastering them will lay a good foundation for learning the knowledge of elemental compounds and acids and alkalis in the future.
2. Be diligent in pre-studying.
Be good at listening to lectures and taking notesIf you want to learn chemistry well, you must first understand this course. Be sure to preview before class, 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 junior high school, and the knowledge is relatively scattered, so teachers focus on the key content when lecturing.
Third, we should pay attention to method memory.
Repeated memorization of some chemical concepts, such as element symbols, chemical formulas, certain definitions, etc., and deepening the impression many times, is the most basic method for effective memorization.
It is also necessary to understand that memory is not only the "what" but also the "why" of a certain question. For example, knowing the structure of a substance should also understand the meaning of that structure. This makes it easy to remember the properties of the substance, and then memorize the preparation method and use of the substance.
Therefore, we should strive to memorize any problem on the basis of understanding.
Fourth, be diligent in previewing.
Be good at listening to lectures and taking notesIf you want to learn chemistry well, you must first understand this course. Be sure to preview before class, 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 junior high school, and the knowledge is relatively scattered, so teachers focus on the key content when lecturing.
Fifth, pay attention to experiments.
Chemistry is an experiment-based science. Chemical experiment is an important scientific method for people to study and understand matter and its change law. Chemistry experiments play a very important role in the study of chemistry in junior high school.
In the junior high school year, there were 82 demonstration experiments and 10 group experiments.
These experiments can stimulate our interest in learning, help us form chemical concepts, acquire chemical knowledge, cultivate the ability of observation, thinking and hands-on experiments, and also help us understand and consolidate the chemical knowledge we have learned, cultivate our scientific attitude of seeking truth from facts, and improve our ability to solve practical problems.
CaCO3+H2SO4=CASO4+H2O+CO2 Ca(OH)2+2HNO3=Ca(NO3)2+2H2O can react with acidic oxides, which can change the color of the indicator, etc. >>>More
1g of pure calcium carbonate emits carbon dioxide.
Indicates that the impurities are comparable to calcium carbonate. >>>More
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.
You enter it in the library.
Summary of the third chemistry solution acid-base salts. >>>More
First of all, answer the first question, molecules, atoms, ions, which are all microscopic ways to understand the form of matter. To be precise, the atom can be considered to be the most basic unit of various elements in nature, which is composed of the nucleus and the outer orbital electrons (also known as bound electrons or circumferential electrons); A molecule is made up of atoms, which can be made up of atoms of the same kind, as you call the elemental metal (k, na, fe......Oxygen (O2), diamond (C), and molecules can also be composed of multiple atoms, such as carbon dioxide (CO2) and water (H2O), which are the smallest particles that exist independently and maintain the chemical properties of matter; Ions, on the other hand, are obtained by molecules (i.e., electrolytes) that can be ionized under certain conditions (e.g., dissolved in certain solvents, heated and melted, etc.), such as hydrogen ions H+, acid ions (sulfate SO42-, carbonate CO32-......).Wait a minute. >>>More