初中化学课程标准明确指出:义务教育阶段的化学课程以提高学生的科学素养为主旨,激发学生学习化学的兴趣,帮助学生了解科学探究的基本过程和方法,培养学生的科学探究能力,使学生获得进一步学习和发展所需要的化学基础知识和基本技能。 Junior high school chemistry curriculum standards clearly pointed out: compulsory education in chemistry courses to improve students 'scientific literacy as the main theme, to stimulate students interest in learning chemistry, to help students understand the basic process of scientific inquiry and methods to develop students' scientific inquiry ability, so that students get Further learning and development of the basic chemical knowledge and basic skills required.