I began to learn chemistry in the fourth grade, a textbook, People's Education Edition.

According to the characteristics of physics test questions in recent years, it is suggested that candidates pay attention to textbooks when reviewing. Experiments, concepts, rules, examples, after-class exercises, small experiments, reading materials, and even an illustration, a table, a scene, and a conversation between two students in the textbook may become the content of the exam. At the same time, review the textbook "live", learn to use the materials in the book to practice compiling questions, and truly understand and apply knowledge.

Secondly, we should strengthen experiments, re-experience the process of knowledge formation, and re-do key core experiments in the review stage. The experimental process should have a purpose and make clear the observation objects, conditions, requirements, plans and steps. In addition, we should pay attention to the application of physical knowledge in life, carefully observe the physical phenomena around us, analyze and explain these phenomena in combination with the physical knowledge we have learned, and improve our ability to observe, analyze and solve problems.

Extended data

The description of chemistry in 20 19 middle school entrance examination shows that the proposition principle, examination scope and examination content are basically the same as those in 20 18. The test questions continue to focus on the basic knowledge and skills of junior high school chemistry, and the knowledge coverage rate should reach more than 85%. It is necessary to create flexible questions and graded questions so that students' abilities can be brought into play to varying degrees.

Compared with the 20 18 senior high school entrance examination, the examination contents are increased, such as "moving electrolytic sodium chloride solution in the laboratory through electrolytic water experiment", "identification and removal methods of ammonium ions" and "main reaction types can be explained from the viewpoint of particles".

Compared with 20 18, the proportion of knowledge points in the 20 19 physics entrance examination has changed, and more attention has been paid to the examination of mechanics, acoustics, optics, electricity and magnetism.

All subjects in Harbin government network -20 19 senior high school entrance examination have been adjusted.