The Construction Of A Chemical Equilibrium Thinking Model Based On Sample Learning

"Chemical equilibrium" is an important part of the chemical reaction principle, it is a very important concept, it is always a key and hot spot of the college entrance examination, how to analyze and solve the chemical equilibrium problem more effectively has always been a hot topic in the research. Example learning is based on the existing knowledge of students, through reading and thinking of the sample,students can understand the new knowledge of problem-solving and master its application process. This study is to set up a suitable example to make the students construct the chemical equilibrium thinking model through the sample study, and to test the influence of the sample learning on the different students' thinking model construction.Firstly, from Example learning, chemical equilibrium, the thinking model of three aspects of the overview of previous studies, is based on the chemical equilibrium theory and test sample of nearly 5 years of college entrance examination in the analysis, the strategy and principle of sample design and the design of a chemical equilibrium sample are put forward. In practice, the experimental group and the control group implemented basic knowledge of chemical equilibrium pre-test,with sample material, practice materials and test materials, such as learning, the paper studies the impact of the model of thinking of students of different types of sample learning effect.The results of the study show that: (1) the study of the sample has a significant role in promoting the construction of students' thinking model of chemical equilibrium. (2) the effect of different types of students on the construction of chemical equilibrium thinking model through the example study. The effect of the two kinds of students in the use of sample learning is highly significant, especially in the study of eugenics, and the students with learning difficulties have no significant difference. (3) through the example study, the construction of chemical equilibrium thinking model has different effects on different subjects. In the case of near migration and migration, exemplar learning has no obvious advantages, and in the distant migration problem, the example study can greatly improve the application level of chemical equilibrium thinking model.