First of all, generally speaking, this final exam is a unified examination for all districts. The scope of the exam is 1 to 8 units, mainly focusing on oxygen and air, chemical equations, carbon and carbon oxides and metals, which have been explained in the guidance post. Next, I will start with a chemistry test paper and interpret the knowledge points and questions examined in chemistry at the end of the term.
The final chemistry test paper must reflect the characteristics of the senior high school entrance examination, and the type, type and difficulty distribution are highly consistent with the senior high school entrance examination.
A chemistry test paper for senior high school entrance examination is divided into three parts.
The first part is 25 multiple-choice questions. For students with a solid foundation, as long as they pay attention to the methods of doing the first 24 questions, there is no difficulty at all, and the difficulty lies in the 25 questions. There are generally several types of problems.
1. Skillful small calculation problem, which mainly examines students' application of average method, difference method and conservation method. For example:
Example 1. (Xicheng) Incomplete combustion of raw coal (containing sulfur) in oxygen will produce CO, CO2 and SO2. If the mass fraction of carbon in the mixed gas of carbon monoxide, carbon dioxide and sulfur dioxide is 24%, the mass fraction of sulfur dioxide can be:
A. 10% B.30% C.50% elementary English D.70%
2. Image problem, mainly investigating the image problem of gas production speed, such as:
Example 2 (Dongcheng) A and B are two solids of equal mass. It is known that A is potassium chlorate and B is potassium chlorate mixed with a small amount of manganese dioxide. When heating A and B at the same time to complete the reaction, the image that can correctly represent the change of generated oxygen quality with reaction time is as follows
20 16 chemistry answering skills of candidates in senior high school entrance examination.
Four principles of physics and chemistry examination
How to allocate time in the actual examination process? How should the order of answering questions be arranged? When you encounter a problem that you can't solve, should you try your best to overcome it or jump over to do other problems first? This involves the principle of answering questions. The following four principles are compiled for everyone, hoping to help students in their exams:
1, order of solving problems
Generally speaking, the order of physics and chemistry questions is easy first and then difficult, because teachers also hope that through this step-by-step way, everyone can enter the answering state as soon as possible. In this case, when we do the questions, we should try to answer them one by one in the order of doing them. This is not only in line with psychological habits, but also able to know fairly well.
2, the principle of doing the problem
What should I do if I encounter problems in doing the problem? Is it necessary to do it in order from beginning to end? The answer is no, of course. If you come across a difficult topic and you still have no idea after thinking about it for a few minutes, then put it down for a while and start doing other topics. Don't waste a lot of time on one topic, so that the following topics can't be completed with good quality and quantity. It would be a pity if the total score was affected for such reasons.
3. Advantage first
You can't master physics and chemistry at roughly the same level, so you must have relatively superior subjects. Adjust your time appropriately when you do the questions: for your own dominant subjects, answer them as soon as possible while ensuring the correct rate, which will save more time for the slightly inferior subjects. This will ensure the highest score.
Step 4 leave no blank
Can this problem be done correctly? Can it be done well? You can't leave a blank space on the paper. At this time, write as many steps as possible and strive for the points you can get. Moreover, a large blank area will also destroy the teacher's impression of marking, resulting in the loss and loss of the final impression score.
Answering skills of chemistry subject in senior high school entrance examination
The examination of chemistry is very important. Be sure to read the symbols of chemical terms clearly, make clear the answers to the known conditions and requirements given by the topic, and then write. When you encounter problems in the process of answering questions, you can skip them appropriately and solve them when you have finished all of them. For topics that have never been encountered, we should seriously recall the basic knowledge related to them. Generally speaking, the information topic of chemistry in the senior high school entrance examination is mainly the transformation between organic compounds. At this time, it is necessary to grasp the structure of "functional groups". Where do different "functional groups" react chemically, and then associate them step by step to answer questions. Don't give up easily.
Chemistry topics are very important, so when doing such topics, we must try our best to recall the experiments in the textbook. Never write the answer directly if you feel deja vu. Don't make empirical mistakes.
No matter what the topic is, check it carefully twice after solving it, and pay attention to whether there are any missing questions or indecisive questions. If you find it, you should make it up in time and do it again. In short, don't rush to junior high school chemistry.
& gt& gt& gt content recommendation
How do children's shoes that just bid farewell to the senior high school entrance examination cope with the convergence of "initial rise"
With the end of the 20 13 senior high school entrance examination, the children's shoes who have just come out of the senior high school entrance examination will face a brand-new high school life for more than a month. Excellent grades in junior high school, but great retrogression in senior high school. Many students believe that the polarization that usually occurs after the third grade is promoted to the first grade is caused by many reasons, such as "the content that the teacher said was never learned in junior high school", "the content in senior high school is much more difficult than that in junior high school" and "the teaching method of the teacher is different from that in junior high school".
Then, how do students in this period overcome the differences in knowledge system, learning mentality and learning methods? These three aspects are also the direct factors for the decline of students' grades, and are also the three convergence problems that need to be solved urgently in junior and senior high schools.
Problem one
Textbooks need to be filled in.
The difference of textbook knowledge system is the most direct feeling of many newly graduated junior high school students after entering the first year of high school. The textbooks used in junior high school teaching and senior high school teaching may come from different publishers. There are some overlaps and some gaps in the arrangement of knowledge system in different versions of textbooks, so teachers in various subjects have to squeeze out time from the limited classroom to fill the gaps in knowledge content for students.
Question 2
Mentality needs adjustment and adaptation.
On the other hand, in recent years, the examination questions in the senior high school entrance examination are relatively simple, and many students have reduced their pressure and their learning attitude is not practical. "They played in the second day of the first grade and didn't review until the third grade." Some students even suddenly began to review after the next semester of junior high school, opportunistically seeking good grades.
After entering high school, many students still face their high school studies with the idea of "striving for junior high school and easily entering experimental classes", thinking of relaxing after entering high school and starting to strive for universities after entering high school. Overconfident mentality leads to students' inability to adapt to high school because of lack of practical study.
At the same time, some students exaggerated the difficulty of high school through word of mouth from previous classmates, and were afraid before they really came into contact with high school teaching. After entering high school with an inherent impression, these students panicked as soon as they took the exam.
Question 3
Emphasize active learning
In terms of learning methods, high schools with many disciplines and high knowledge intensity emphasize students' conscious and active learning more than junior high schools. Take Chinese recitation as an example. If students can't recite the text assigned by the teacher, the junior high school teacher may stay and supervise the students until they recite it. But high school teachers can't have time and energy to stay and supervise students. Everything depends on students' initiative.
Therefore, it is difficult for students to adapt to the high school teaching method which focuses on cultivating students' ability of active deduction, generalization, induction and summary in a short time after they get used to the model of junior high school teachers' not doing exercises and summarizing textbooks.
How to deal with the initial rise and convergence
1. physics slows down.
The most important, difficult and basic part of senior high school physics lies in the mechanics part of senior one. The poor foundation of physics in senior one directly affects the physics study in senior two and senior three. Therefore, to learn physics well in senior one, we must slow down the progress, lower the requirements appropriately and lay a good foundation. At the same time, cultivate interest in learning physics.
2. Multiple associative examples of learning physics
It is hard to imagine that students who enter high school for the first time find it difficult to study. Therefore, students should make good use of intuitive methods, do more experiments and connect with examples, grasp physical concepts and establish physical models through specific physical phenomena.
3. Strengthen the ability of logical reasoning
Just entering high school, students are not good at logical reasoning and solving problems with algebra. They often only memorize formulas and pay little attention to the conditions and scope of formula application. Therefore, we should pay attention to strengthening this training when studying.
4. Adjust learning methods
After entering senior high school, it often happens that students can understand in class and textbooks, but they make mistakes when solving problems. The main reason is that I don't have a deep understanding of physics knowledge and junior high school English, and my ability to solve problems comprehensively is still relatively weak. Therefore, students should conscientiously complete each exercise while strengthening physical concepts and laws. If they can't solve it, they can discuss it with each other. If the discussion fails, they should ask the teacher for advice.
Countermeasures for learning in grade three: accurate positioning and striving for initiative
As soon as they entered the third grade, many students began to get used to the accelerated learning steps. Suddenly, there seems to be more homework classes than before. Teachers and parents often say that they are in grade three, so we should hurry up. Some students send emails and enter the third grade, knowing that they have to work hard and are nervous, but they really can't figure out where to work hard and what details to pay attention to.
The reporter consulted Mr. Zhou from Guiyang Experimental No.2 Middle School.
Teacher Zhou made a detailed analysis of the whole stage of grade three.
The third grade is the key to the whole junior high school stage. We will enter the study state as soon as possible in the third year.
Set higher goals and improve your self-confidence.
Before everyone acts, he must first have a goal. You can set big goals in the third year, but you should also set small goals in a short period of time. These goals should be set in line with your reality and higher. Goals can stimulate your potential to the greatest extent. After a period of time, check that your study has reached the expected goal, and you will be full of confidence while enjoying yourself.
Be prepared for hardship and position yourself accurately.
The knowledge of grade three is deeper and more difficult, the learning task is more arduous, and the competition among students is more intense. At this time, students should adapt to the new competition in learning as soon as possible with self-confidence and tolerance. Objectively analyze your own advantages and disadvantages, give yourself a correct evaluation, and always motivate yourself to work towards the goal.
Keep up with teachers and cultivate learning ability.
In the last semester of the third grade, the teacher will talk about new lessons. In class, he must follow the teacher, listen carefully, take notes carefully, and then review in time; Next semester, we will review systematically. Because of the time, this link will not be discussed in detail in some places. Students need to read books by themselves after class, and don't miss every knowledge point. It is of great benefit to junior three students to follow the teacher's thinking, master effective learning methods and study solidly.
After the exam, see which points should not be lost, copy these questions into the wrong book, draw the key points and easy-to-make mistakes with pens of different colors, and think and practice repeatedly. Students should learn to analyze their grades and know what they are learning through repeated analysis of their grades. We must be careful when doing performance analysis, which parts of the knowledge are not firm and which parts of the exam often lose points, which is very effective in improving the performance. We should seize the time and keep calm. At this time, we don't have to care about scores and rankings. Pay special attention to efficiency in the arrangement and utilization of time. Never stay up late to review, which will affect the quality of the lecture the next day, otherwise it will not pay off.
The study method of grade three: do a test every day to get high marks.
There are more and more supplementary books on the market, because teachers can't do without them in their daily teaching, and students regard them as treasures in the entrance examination. So what can be done to curb the current situation of the proliferation of supplementary books? Some students and educators suggest that the education authorities should explicitly prohibit teachers from using supplementary books in class.
Some teachers can't ""
"The graduating class of senior three said that it is difficult to teach, and it is really easy to say that it is easy to teach." A special-grade teacher in Shanghai told reporters that some teachers who have taught graduating classes for many years will not "attend classes", analyze teaching materials and teach students in accordance with their aptitude. They don't have to delve into textbooks or even write. They only need to bring different teaching AIDS into the classroom every day to do exercises and answer questions, so that some teachers who had a lot of room for improvement in teaching gave up their "kung fu" after teaching in senior three for several years.
Mr. Ding, a reader, called and said that some teachers would tear off the pages of pirated teaching AIDS and let students do it. Students would encounter the problem of "Gui Li" if they could not do it any more. Some teachers have reported that graduating class teachers who rely heavily on supplementary books are rarely willing to participate in open classes, teaching competitions and other commercial activities. The apparent reason is that they are "nervous in teaching" and can't give decent classes in essence. Strangely, most principals will be "lenient" with them as long as they get high marks in the entrance examination.
Fine practice is work.
Zhang, dean of Jing 'an Education College, said that the affiliated school of Jing 'an Education College has banned teaching AIDS from entering the classroom. Teachers are not allowed to specify students to do exercises in junior high school English in any supplementary books, nor are they allowed to bring supplementary books or papers from other schools to students at will. Although the fresh graduates of this school are also doing mock examination papers in various districts, they have all been "finely processed" by teachers. The same questions that are not suitable for students in our school or are obviously of little significance will be removed, and students will be asked to do carefully selected questions. Shen Zhiyuan, a teacher in the second grade of junior high school, only assigns one question every day, but this question is both * * * and highly targeted from his classroom teaching and practice that day. The amount is not large, but the thinking capacity is large. In the class taught by Mr. Shen, the average score of mathematics in the senior high school entrance examination is above 143.
Work hard on teaching management
Zhang Zhiyuan Ren Li advocated "green" and "green movement". Teaching AIDS can no longer be used, and teachers are forced to carefully prepare homework and examine questions. Many problems have been run-in by many teachers. However, at present, there are very few schools that can thoroughly study supplementary books like the primary school attached to Beijing Institute of Education. Recently, some experts suggested that a corresponding "access" system should be established for teaching AIDS that flow into the market. However, Dr. Fang Jianfeng of Shanghai Academy of Educational Sciences thinks that it will be more difficult to operate and implement just like opposing teachers as tutors. The key is to rely on schools and teachers to change the concept of education and make more efforts in strengthening the management of curriculum teaching.
Among the 25 opinions issued by the Municipal Education Commission on strengthening curriculum management in primary and secondary schools, it is only stipulated that "schools and individual teachers shall not uniformly organize or require students to purchase counseling materials without the approval or recognition of the Municipal Primary and Secondary School Textbook Review Committee". After listening to many opinions, the reporter suggested extending and supplementing this regulation, that is, as clearly stipulated by Beijing Institute of Education, schools and teachers should not use such textbooks as classroom teaching books.
Experts suggest that entering the new third grade requires three psychological levels.
Entering the new third grade requires three psychological levels.
The summer vacation is over, the new school year is coming, and new junior three students will start a new study life. Remind candidates to adjust their mentality in the early stage and prepare for entering the third grade.
Pride is unacceptable.
Li Chen is a junior three student, and his grades have been very good. Her ideal is to be admitted to a key high school. A few days before school starts, other students are previewing new lessons in advance, and some have reviewed what they have learned, but Li Chen is in no hurry. She thinks she has a good foundation and always praises her for being smart, so she doesn't have to worry like other students.
■ Expert advice:
According to experts, students with good grades are prone to Li Chen's disease. It is not advisable to think that if you have good grades in the past, you can spend less effort than others in grade three. Pride goes before a fall. Students in grade three should learn to overcome their pride and tell themselves that although their academic performance is good, they will be surpassed by other students if they don't work hard in grade three. No matter what achievements have been made before, in the new school year, everyone is standing on the same starting line again. Only by continuing to work hard can freshmen in Grade Three achieve final success.
Have the confidence to meet new challenges.
Zhang Qiang, a freshman in Grade Three, has been unhappy since a month ago. He is already in Grade Three, and has set a goal for the senior high school entrance examination. However, he feels that his academic performance is not good, and he didn't study hard in Grade One and Grade Two. It must be too late to work hard now. Facing the study and life of the new third grade, Zhang Qiang has no confidence at all. "If you can't get into a good high school, you can't think of a good university. I feel hopeless. " Zhang Qiang said sadly.
■ Expert advice:
Psychologists say that some students with average academic performance often lose confidence and think it is too late to work hard now. In fact, the content of the senior high school entrance examination is not very difficult. From the third grade, you can get excellent results when you enter the senior high school entrance examination. The key for junior three students is to learn to regain their self-confidence, attach importance to their own advantages, and increase their self-confidence by improving their grades every time, instead of comparing with students with good grades. Usually ask teachers and classmates for advice, tell yourself in your heart "I can do it, I will do it" and give positive psychological hints.
Excessive anxiety is unnecessary.
Ms. Wu's son is introverted and is in the third grade. Now his son talks less and hardly communicates with others. Ms. Wu chatted with her son, who was very anxious. He is worried that he can't adapt to the tense junior high school life, that he won't be admitted to the ideal high school, that he will disappoint his parents and even dream that he failed in the senior high school entrance examination.
■ Expert advice:
It is normal to feel anxious when entering the third grade, but we should learn to control this anxiety in a moderate range. For example, the student's anxiety will affect his study and life in grade three. Students who feel anxious can communicate with teachers and classmates more, understand other people's ideas, and know not only themselves but also other students who feel anxious. Most of the causes of anxiety are self-distrust. Students in Grade Three can remind themselves that in Grade One of Grade Three, as long as they work hard, they will certainly achieve ideal results. There is no point in worrying too much now.
Physics review method of grade three: pay equal attention to listening and homework.
In recent two years, the examination questions in the senior high school entrance examination are closer to students' real life, and pay attention to the combination and application of physical knowledge and its research methods with social practice. Junior high school English embodies the curriculum concept from life to physics and from physics to society, and pays attention to the creation of problem situations and the understanding and application of knowledge.
Physics in grade three is dominated by electricity. The whole electrical knowledge runs through, the electrical exploration experiment runs through, and the textbook knowledge is closely related to practice.
Familiar with basic concepts from the beginning.
Under the new curriculum, it is not contradictory to attach importance to basic knowledge. It is necessary to make clear the basic concepts, be familiar with the basic laws and be proficient in the basic methods. Don't simply memorize the basic concepts, but have a deep understanding. For example, the specific heat capacity is defined by the ratio, which is an attribute of matter and has nothing to do with the quality of matter. Regarding the basic laws, it is necessary to clarify the applicable conditions and not mechanically copy dogma. For example, the last question in the senior high school entrance examination in Taizhou this year tested the application scope of Archimedes' principle, and whether the plastic bag experiment in the topic can fully prove Archimedes' theorem and so on. For the basic methods, we should use them flexibly in combination with practical problems and pay attention to classification and summary.