-
This, this... Take good notes, straighten it out, chemistry is the liberal arts in science.
-
1. Keep a record of the test center
Although the content of high school chemistry is many and complex, there are only a few forms of tests that are often tested, and the test points are basically mentioned by teachers in the usual learning process. Therefore, high school students must pay attention to listening when they are in class, record the key content and test points that the teacher said, grasp the key content when studying after class, and take the test center as the focus of review before the exam, so that the learning goal will be clearer and the learning efficiency will be high.
2. Memorize chemical equations.
Chemical equations are very important in the study of chemistry in high school, so high school students must pay attention to the mastery of chemical equations in the process of learning.
Since there are many chemical equations, it is difficult to remember them one by one, and it is easy to remember them confusingly, so students should pay attention to the method when memorizing. For example, the transformation between alkali metal substances can be memorized and drawn at the same time, and the memory is also a deeper understanding.
3. Pay attention to the summary when doing the questions.
The main purpose of the questions is to consolidate the knowledge learned and use the knowledge points proficiently. In the process of doing questions, it is inevitable that there will be some misunderstandings or mistakes in thinking, so every once in a while, you must summarize the questions you have done to see what you need to improve and what you are prone to make mistakes, and also summarize what the high-frequency test points of this part of knowledge are, so that the goal of learning and pre-exam review will be clearer.
-
As follows:
1. Chemistry mainly first understands the principles, then combines experimental phenomena and chemical equations, diligent memorization, and then combines some typical exercises to strengthen understanding and memory, and then pays attention to the comparison, induction and sorting of knowledge points. In fact, the questions are quite common, grasp the equations and various calculation formulas, and memorize the properties of various substances.
2. Preview before class. The day before class, be sure to take time to consciously preview what the teacher will talk about the next day. Learn to study first and then listen to the lectures.
3. Listen to every class. Listening to lectures is the core part of the learning process, and it is the main way to learn and master knowledge. Whether you can master the knowledge learned well in the classroom is the key to determining the learning effect.
If you can basically master the basic knowledge and skills you have learned in class, you will not have difficulty reviewing and doing homework after class.
4. Take good notes. To learn chemistry well, note-taking is also an important part. In addition to focusing one's attention and improving the efficiency of listening to lectures, note-taking is also a great help for post-class review.
So, learn to take notes and develop a good habit of taking notes. Therefore, while listening carefully, you should also take good notes.
5. Careful observation and hands-on experiments. Through demonstrations and student experiments, learning to observe the operation and phenomenon of the teacher's demonstration experiments, doing a good job in student experiments, and taking good laboratory classes are the foundation for learning chemistry well.
-
There is nothing difficult about chemistry in the first year of high school, as long as you listen carefully to the teacher in class, remember some regular things, and pay attention to the summary.
-
The first year of high school is basically inorganic chemistry, so the most important thing is to memorize the chemical formulas of substances that often appear in the book, as well as those important equations, in some inference problems, we often take the physical properties of some substances as a breakthrough, such as: its color, state, etc.
-
Log in to 591 to learn, which has all the chemical equations and detailed explanations of the after-class problems you want, you can log in with your mobile phone, it is free to use, and the traffic is not large, the textbook version can also be selected, you can try it, I hope it will help you. This registration requires an invitation code, 59106....Hehehe.
Select C to generate Al(OH)3 precipitates.
Al2(SO4)3 reacts with soda ash solution, and trivalent aluminum ions will be double-hydrolyzed with carbonate ions to form trivalent hydroxide precipitate and carbon dioxide gas. >>>More
Here's the idea of this question:
The composition of the sample should be figured out, it should contain KOH, K2CO3(, H2O(, obviously, KOH accounts for 90%, so that the mass of KOH and K2CO3 in 10g can be calculated respectively, and the molar number of K+ can be found. >>>More
There are 10 electrons outside the nucleus of ion B+ and B is known to be Na >>>More
The inside of the battery is from the negative electrode to the positive electrode.
1.Definition of electrolyte: An electrolyte is a compound that conducts electricity in an aqueous solution or in a molten state. >>>More