Usually I don't teach the chemical experiment operation in the senior high school entrance examination, and suddenly I say I have to count 20 points. There are only a few days before the exam. What sh

Usually I don't teach the chemical experiment operation in the senior high school entrance examination, and suddenly I say I have to count 20 points. There are only a few days before the exam. What should I do? 1, master the basic experimental operation, 2, master the grouping experiment in the textbook, 3, pay attention to the conclusion of the experiment.

First, master the basic experimental operation: the physical and chemical practical operation examination in junior high school mainly focuses on the basic experimental operation skills and experimental precautions. Usually in the experiment, the teacher has emphasized it, and before the operation exam, the teacher will further emphasize the relevant precautions. Second, master the grouping experiment in the textbook: the experimental operation test mostly draws questions from the grouping experiment required in the textbook, and the demonstration experiment does not require students. There are not many group experiments. Usually, the teacher organizes everyone to do it, so just review the experimental process again. Third, pay attention to the experimental conclusion: the experimental operation test is actually not only to investigate the operation, but also to investigate the experimental conclusion sometimes. You will be given a test question while operating the test. You should fill in some answers or conclusions on the test question, and make every effort to make the answer not deviate too much from the standard answer. Four. Other precautions: you need to pay attention to the daily operation and management of the laboratory, such as putting all the instruments back in place after the experiment, sorting out the experimental table and other small details, and failing to do so will deduct points.

Generally speaking, it is not too difficult for the physics and chemistry students in the senior high school entrance examination. Pay attention to the following points: keep a good attitude, take a deep breath before admission, don't be nervous, grasp the time, pay attention to details, pay attention to the process, master the operation essentials of each experiment, pay attention to the deduction points of the experiment, fill in the test paper carefully, and arrange the equipment in place.