多数学生接受教师传授的化学知识本身并没有太大的困难 ,但在独立运用所学知识解决千变万化的化学问题时却常常感到力不从心 ,甚至不知道应从何处下手。解决好这个问题对于调动学生学习化学的积极性 ,激发学生化学学习兴趣 ,更进一步培养学生能力 ,落实素质教育 ,有着十分重要 Most students accept the chemical knowledge taught by the teacher itself is not too difficult, but often use the knowledge learned to solve the ever-changing chemical problems, but often feel powerless, and do not even know where to start. Solving this problem is very important for mobilizing students’ enthusiasm for learning chemistry, stimulating students’ interest in chemistry learning, further cultivating student abilities and implementing quality education.