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一、探究性学习课题建立的背景在化学课程教学中,进行探究性学习,对于培养学生的创新精神和实践能力,完善学生的科学素质具有重要意义。第9章酸碱盐学习结束后,学生遇到这样一道题目,将生锈的铁钉投入装有足量稀盐酸(稀硫酸)的试管中,观察到的现象是:铁锈逐渐溶解,溶液由无色变为黄色,过一会儿铁钉表面有气泡冒出,溶液最后变成淡绿色。学生在接触这个问题
First, the background of the inquiry-based learning project In the chemistry course teaching, to carry out inquiry learning is of great significance for cultivating students ’innovative spirit and practical ability and improving students’ scientific quality. Chapter 9 Acid-Base Salts After the study is over, students encounter such a problem that rusty nails are placed in test tubes filled with sufficient dilute hydrochloric acid (dilute sulfuric acid) and the observed phenomena are: gradual dissolution of rust from Colorless to yellow, after a while nails bubble surface emerge, the solution eventually turned pale green. Students are exposed to this problem