2. The science subjects studied in high school include mathematics, physics, chemistry, biology and so on. Mathematics is the most difficult to learn, accounting for the most in the college entrance examination, and it is also one of the easiest subjects to score.

3. The physical chemistry course in senior high school is not very difficult, and under the new college entrance examination mode, the full score of physical chemistry is 100, which is not a unified examination subject, but still easier than mathematics subjects.

Mathematics is an important subject for both liberal arts students and science students. It is one of the three major subjects, accounting for a relatively large score. If you don't learn math well, it may directly affect the study of physics and chemistry subjects.

However, for some students, physics is also difficult to learn. Physics starts from the second day of junior high school, and the knowledge points are very logical. Senior high school is divided into four knowledge points: optics, electricity, mechanics and heat, among which optics and heat are optional courses, and electricity and mechanics are also the most difficult courses. The general big questions are all about mechanics and electricity, and the knowledge points are particularly concentrated. Once the topics of mechanics and electricity are not firmly mastered, it is difficult to improve the performance of physics.