Analysis Of Barriers Factor Of Solution To The Salt Hydrolysis Problems And Study On Its Solutions

From the perspective of the development of China's national conditions,the college entrance examination almost affects the fate of every Chinese examinee.My school is a provincial model high school in donggang city,liaoning province.Since it is a county-level model high school,most of its students come from the surrounding urban and rural middle schools,so the college entrance examination is the only shortcut for students in this school to have a higher quality of life.In the college entrance examination,the liaoning test paper USES the national(2)test paper,with a total score of 750,accounting for 100 points,which shows the importance of chemistry.Salt hydrolysis is "take 4" the content of chapter 3 of the third quarter,abstract to understand this part of knowledge,students have difficulty in learning and problem solving process is,in the university entrance exam questions,relative to other examination questions has certain difficulty,but this part of knowledge is an important study points test,and this part of knowledge in the elective 4 teaching material is also very important in the position,have a certain academic value.I compiled the high school students salt hydrolysis problems to solve the obstacle test volume and the school students to investigate the causes of their problems to solve the obstacle to study and put forward the corresponding countermeasures.This study will pass a test in diagnosis,oral report method,literature method,data statistics method to study the following five aspects:(1)improve the ability of high school students solve salt hydrolysis title(2)the reason for the evaluation criteria of high school students ability of solving salt hydrolysis topic(3)students in salt hydrolysis obstacles existing in the process of learning and problem solving(4)for just enter the high three students,their ability to solve salt hydrolysis subject status(5)students,teachers,and parents work together to change the present situation of students to solve the problem of salt hydrolysis method.This paper is divided into six parts,the first part is the introduction of this paper,the second part is the core concept and theoretical basis of the study;The third part is the preparation of high school student salt hydrolysis problem solving obstacle diagnosis test paper.Tutor Wang Shicun in top class teacher and school teacher Li Xianfeng,with the help of the teacher,determine the high salt hydrolysis eight dimensions of knowledge and develop the high salt hydrolysis problem solving obstacle diagnostic test,in the teaching of senior students issue papers and contrast(22)class last semester final exam scores of the reliability,validity,degree of differentiation,the difficulty of testing.The fourth part is to distribute the test paper of obstacle diagnosis that meets the test requirements in the class(21)where I teach,and also to test the reliability,validity,distinction and difficulty of the test paper.The fifth part is the analysis of the causes and countermeasures of the obstacles for high school students to solve the problem of salt hydrolysis.The sixth part is the conclusion and reflection.Through the research,we come to the following conclusions:(1)from the perspective of studentsFrom the perspective of students' problem solving skills,many students are not good at digging out the key points in the questions,especially for lengthy questions,and a few students are not confident enough.According to these situation,to teach students the topic carefully,reduce without scoring because of careless,in normal training to strengthen the close degree of students reading and mining information ability training,teach students the complex problems simple,will step a complex problem resolve into several small problems,and then combined with the existing knowledge to answer.From the students thinking and knowledge to solve the problem,want to students the topic of well salt hydrolysis,students need to have knowledge migration ability,students can build links to new problems and have mastered the basic knowledge and problem solving skills,a bridge between learn to analysis the topic the key information,including important text information,image information and form.The key for students to solve the problem of salt hydrolysis is to represent all the ionization and hydrolysis involved in the solution,and then further analyze the interaction of these ions in the solution.Put the problems you think are good and wrong in the wrong book.From the point of knowledge level,because the judge hydrolysis of salts in the college entrance examination questions are relatively comprehensive,so students knowledge of this part salt hydrolysis cannot appear flaw,want to solve this problem is to help students build the complete salt hydrolysis system of knowledge,conditional schools,of course,also can use computer to assist in teaching.On the students psychological state to solve the problem of it,some of the good student in relatively quick buck mentality to solve the problem,want to use the shortest possible time get the best result,this is obviously not in conformity with the actual,so teachers should teach students,learning is a gradual process,is a process of concentration,makes them more calm state of mind.Accept the results of each test with grace for victory and grace for defeat.In addition,students should also be careful in solving the calculation problems in the salt hydrolysis problem.In order to improve the accuracy of the calculation results,students should reduce the use of calculators at ordinary times.(2)from the perspective of teachers and parentsIn the daily teaching process,teachers need to help students develop good habit of doing exercises,teach them how to review the topic and improve the efficiency of doing exercises.Teachers should choose targeted and concise exercises,which can not only reduce the burden of students but also achieve the same teaching effect.For difficult or long chemistry problems,teachers can encourage students to have the confidence to solve the problem of salt hydrolysis.In the class,the teacher should run through the salt hydrolysis problem answering skills.Parents should also give more encouragement to students in their study and life.They should always pay attention to the inner world of their children,instead of putting their own ideas on their children,let them develop freely and build a warm and motivated family atmosphere for them.