Ask for help on how to get the most out of a chemistry competition

I don't know what you mean by harvest, just want to get into the qualification of independent enrollment, if so, in-depth study of chemistry knowledge, as for those tutorial classes, if you feel willing to go to it, if you can understand, read the book yourself, the efficiency should be higher, but this is still up to you to decide, the content of the competition is mostly high school exposure to less knowledge, it is recommended to find some university textbooks to see, the four major chemistry foundations are understood (inorganic chemistry, organic chemistry, physical chemistry, analytical chemistry, Mainly organic chemistry and inorganic chemistry, analytical chemistry has a small proportion), and I would like to remind you, don't think that independent enrollment is the only way to enter a good university,,, focus on independent enrollment, if you can, it is best to look at the topics of independent enrollment this year, to see if the difficulty is suitable for yourself,,, to be honest, I went to the competition at the time, mainly for independent enrollment, and then I also successfully obtained the qualification to go to the independent enrollment exam, I also worked hard for this qualification,,, but when it came to independent enrollment registration, I carefully studied its topics and found that if I worked hard to prepare for independent admissions, it was better to work hard to prepare for the college entrance examination

In fact, it is the content of the university, inorganic, organic, physicochemical, and structural. Brush up on the questions, in fact, the province is still very simple. However, under the current policy, chemistry itself is not very easy to walk, and the majors of escorted students are also related to chemistry.

Reading books often and reviewing more is almost fine, but in the future, it is the era of the college entrance examination, and the content of the college entrance examination must not be left behind, which is very ......important

No ideas......The competition will basically be canceled next year, and you still know ......Relying on this to go to college must be at least in the top 5 ...... in the province

Although the independent enrollment and escort exams are conducted at the same time, there are two concepts: the former allows you to get extra points from the independent enrollment organizer (for example, if you participate in and pass Tsinghua University's independent enrollment, you get 20 extra points from Tsinghua University's independent enrollment, and the college entrance examination score line is 690 in Tsinghua University and 685 in Peking University, so you can apply for Tsinghua University with 670, but it is useless to apply for Peking University).

The latter is barely a real guarantee, but you need to obtain the "escort qualification" through other channels and pass the escort exam to be escorted, which is really not ...... simpler than the college entrance examination

In the past, as long as the competition won the first prize in the round of the "National Preliminary Competition", that is, the first prize at the provincial level, you could get the "guaranteed qualification" and 20 points for the competition, which can be used when applying for the college entrance examination, but cannot be superimposed with the extra points for independent enrollment. Starting next year, this policy will make major adjustments across the country, that is, you need to get at least the third prize at the national level in the round of the "national finals" to get the "guaranteed qualification" and 20 points for the competition, and the top 5 in the province need to be ...... to advance to the finals

I am the predecessor who won the 4th place in Heilongjiang, and our chemistry competition has a total of 3 rounds, namely the provincial competition, the national junior high school, and the finals. Well, I can only say that if you want to rely on this to relieve the pressure of going to college, you must at least pass the provincial competition, win the top five in the national junior high school, and then enter the finals and win the ......

The tutorial class is useless, at least it doesn't help the two rounds of the national junior high school and the finals, and the provincial competition is another matter, but as far as I know, the provincial level of Zhejiang's provincial competition is not ...... lower than that of the national junior high school

The provincial competition doesn't understand the situation and can't help you. However, the beginning of the country is the knowledge of university textbooks, you can find "basic organic chemistry", "inorganic chemistry (fourth edition)" and other university textbooks to take a look, which are more useful than reference books, and then do the questions. It is best to take the provincial competitions and the real questions of the beginning of the country, and then correct the answers, and then see that you are wrong in that knowledge point, and then turn to the university textbooks to find the corresponding position.

Circulate. I feel that I can pass any set of competition questions, check the scope of your competition test center on the Internet, and look for each word in the university textbook against that range, well, and then you can go to the competition ......Don't think it's easy to complete, the original questions of the 10-year junior high school competition can take you 3 months, and I don't believe anyone can win a set of ...... in 1 weekIt's also a month's worth to read textbooks, after all, you're in high school, not college, ......

Learn from the bad and ask questions from the good. Victory is not arrogant, defeat is not tired. Have faith in yourself. There are people outside the world, and there are heavens outside the sky. You're never bad, and you're never the strongest.

In fact, there is a saying that "the greater your ability, the greater the gain".

In other words, the more you know about chemistry, the better you can grasp every question in the competition!

It's like two masters competing in martial arts, both masters can fight together, if it's not a level,; There's nothing to start with!

When you meet on a narrow road, the brave wins!

I have a bit of information, and I need **qq, indicating the intention (276733969).

1. Review the basic knowledge of chemistry again to ensure that there are no loopholes in the basic knowledge, and do not ignore the basic content of the keycode. When revising, you can redo the exercises in the class and improve your proficiency and accuracy.

2. Sort out the examination papers in recent years, first answer them independently, and then correct the wrong questions, and organize all of them into the wrong question book to prepare for the review of the future manuscript.

3. Buy the mock test papers of the chemistry competition and practice them in the mold ruler line, find the knowledge points that you have ignored, and make a record. Finally, the mistakes are sorted into the error book.

4. Review the wrong questions and forgotten knowledge points, maintain a good attitude, and finally take the exam.

1. Learning objectives: systematically and solidly learn the knowledge points required for beginners.

The first year is the "first year" of the learning competition. At this time, students are usually less stressed in class and have more time to devote to competitive learning. After completing one year of study and taking the National College of Education, students can make a reasonable assessment of their natural interests, abilities and levels based on the results of the first National College Examination.

In the second year of high school, when the class is stressful, help yourself adjust your learning goals and invest your time reasonably.

Therefore, it is recommended that you spend a certain amount of time and energy in the first round of high school study to complete the basic knowledge of junior high school seriously.

2. Knowledge composition: high school chemistry + basic principles of chemistry (including analysis) + organic chemistry + inorganic elements and structural chemistry.

The examination time of the Huajing National Examination is September every year. Generally, we recommend that students complete their high school chemistry studies during the summer of their third and first year of junior high school. Big.

1. The sophomore year has completed the first round of preparation in the summer vacation, and can successfully participate in the first national examination in September.

Hello answer, the conventional understanding is to ask their own teachers to help dial it, the teachers are experienced, experienced in a hundred battles, have seen a lot, experienced, more than enough practical experience, can give you all the help you need.

There shouldn't be any of these competitions in the third year of junior high school now.

Why do you even need to prepare this? Even the usual exams have been controlled, but I'm a little worried that you spend a lot of time on the competition, which will delay your later high school entrance exams.

In this way, you will have the opportunity to participate in high school chemistry competitions in the future, and you will understand your feelings.

It's a good thing that you must be very wise to have such a plan ahead, but it is recommended that you prepare for the high school entrance examination first to ensure that you are admitted to the best local high school, so that you can get all the expected standards later.

The precipitate of white and Lingse was BaSO4, the crude alkali solution was NaOH+BA(OH)2, and R was BA(OH)2

baso4146*5%/ hcl

Therefore, the amount of Ba(OH)2 in the original rock shed is .

Ba(OH)2 mass 171*

The last question of the Shanxi preliminary round of the junior high school chemistry competition: R is barium hydroxide, forget it yourself.

1。None of them explained it clearly. First of all, n in NCL3 is negative.

Since one pair of electrons of ammonia ions is coordinated to hydrogen ions, the electrophilicity is stronger than that of NH3.

Chlorine can optionally be combined with N or H. Naturally, NH4+ is chosen to bind to N, which has a stronger electrophilicity than NH3.

And in NH3 choose to combine with H!

3。Tri-coordination, Cu+ is only the most common two-coordination.

4。Generate hg, cuh, ni2p