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高中全部化学是以门捷列夫周期律为基础的,因此这个重要理论教材在化学课程中必须占有适当的位置,以便遵循这种科学精神和系统进行研究各种化学事实。大纲中规定在讲各族非金属之前先使学生对门氏周期律和周期表有了初步认识。在讲完各族非金属之后再对它
All chemistry in high school is based on Mendeleev’s periodic law, so this important theoretical text must have the right place in the chemistry curriculum in order to follow this scientific spirit and system to study various chemical facts. The outline stipulates that students should have a preliminary understanding of the Mendelian periodicity and periodic table before speaking about the non-metallics of all ethnic groups. After finishing the non-metals of all ethnic groups, give it back