我国化学家戴安邦说过:“只传授知识和技术的化学教育是片面的,全面的化学教育要求既传授化学知识和技能,又训练科学方法和思维,还培养科学精神和品德,学生在化学实验中是学习的主题,在教师的指导下进行实验,训练用实验解决化学问题,使多项智力因素皆得到发展,故化学实验是全面化学教育的一种最有效的教学形式。”对于刚刚涉足化学的初中生来说,求知欲是异常强烈的。九年级的课不急于讲解知识点,而是以各种实验开头(吸入氦 Dai Anbang, a chemist in China, said: "Chemistry education that only impartes knowledge and technology is one-sided. Comprehensive chemistry education requires both imparting chemical knowledge and skills, training in scientific methods and thinking, developing scientific spirit and morality, Experiment is the theme of learning, experiments under the guidance of teachers, training to solve chemical problems experiment, so that a number of intellectual factors have been developed, so chemical experiments is a full chemical education is the most effective form of teaching. Just getting into chemistry junior high school students, curiosity is unusually strong. The ninth grade is not in a hurry to explain the knowledge point, but beginning with various experiments (inhalation of helium