化学是一门自然科学,学生对此门学科在未知时而产生浓厚的兴趣。当接触此学科的学生,学习的积极性都非常高,但随着时间的推移有一部分学生就产生一种厌学的兴趣,特别是对元素周期表中的相对原子质量,不易理解和掌握,虽然元素原子的相对原子质量不需学生死记硬背,但是作为教师 Chemistry is a natural science, students interested in this subject unknown and sometimes have a strong interest. Students who are exposed to this subject have a very high level of motivation to learn, but over time some of them have an unpleasant interest in learning, especially on the relative atomic mass in the periodic table, although The relative atomic mass of elemental atoms does not require student rote memorization, but as a teacher