当前世界上许多国家为促使化学教育现代化,都把加强实验教学视为培养能力和提高教学质量的重要措施。由此可见,化学的实验教学,是化学教学内容的重要组成部分。也是化学教育现代化发展的必然趋势。所以在中学化学教学大纲里明确指出:“实验教学可以帮助学生形成化学概念,理解和巩固化学知识,培养学生观察现象、分析和解决问题的能力,获得 In order to modernize chemical education, many countries in the world today regard strengthening experimental teaching as an important measure to cultivate their ability and improve their teaching quality. Thus, chemical experiment teaching is an important part of chemistry teaching. It is also the inevitable trend of the modernization of chemistry education. Therefore, it is clearly pointed out in the chemistry syllabus of secondary school that "experimental teaching can help students to form chemical concepts, understand and consolidate chemical knowledge, develop students’ ability to observe phenomena, analyze and solve problems, obtain