化学是一门以实验为基础的学科,这历来是化学同仁们信奉的经典。它通过实验演示,引起学生观察、思维,从而认识物质的性质及变化规律。精心设计合理布局的演示实验具有高度的艺术性,是化学教学艺术的重要组成部分。很多化学工作者对化学实验的改进和创新做出了很大的贡献,这是难能可贵的。但是,有的化学教师在教学中放弃了课本上传统的 Chemistry is an experiment-based discipline, which has traditionally been the classic classics of chemistry. It is through experimental demonstration, causing students to observe and think, so as to understand the nature and changing laws of matter. Well-designed and reasonably-designed demonstration experiments are highly artistic and are an important part of chemistry teaching art. Many chemists have made a great contribution to the improvement and innovation of chemical experiments, which is commendable. However, some chemistry teachers abandon the traditional textbooks in their teaching