化学新课程标准指出:化学教学要以提高学生的科学素养为主旨,激发学生学习化学的兴趣,培养学生的科学探究能力,引导学生认识化学知识在促进社会发展和提高人类生活质量方面的重要作用。这就要求我们教师在教学中,不仅要加强对学生基础知识、基本技能的教育,而且要培养学生独立探究化学规律的科学精神 The new chemistry curriculum standard points out that the chemistry teaching should focus on improving students’ scientific literacy, stimulate students’ interest in learning chemistry, cultivate students’ scientific inquiry ability, and guide students to recognize the important role of chemical knowledge in promoting social development and improving the quality of human life . This requires us teachers in teaching, not only to strengthen the basic knowledge of students, basic skills education, but also to cultivate students to explore the laws of chemistry independently of the spirit of science