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教学实践证明,从82年秋开始使用的全国统编初中化学教材是成功的。但也需要调整和发展,某些内容的编写还值得商榷,本着“百家争鸣”的精神,现就教材中某些局部内容提一些看法和建议。妥否?请同志们指正。一、关于混和物和纯净物的概念
Teaching practice proves that the national junior high school chemistry textbooks that have been used since autumn 82 are successful. However, adjustments and developments are also needed. The preparation of certain contents is also worthy of deliberation. In the spirit of “battle for a hundred schools of thoughts”, we present some opinions and suggestions on certain local content of the textbooks. Are you correct? Ask the comrades to correct me. I. The concept of blends and pure materials