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物质结构元素周期律是中学化学的灵魂,它指导中学化学学习全过程,物质结构和元素周期律是高考考查热点,在试卷中重现率为100%.研究2008年全国各地15套化学单科试
The periodic law of the structural elements of matter is the soul of middle school chemistry. It guides the whole process of chemistry learning in middle schools. The periodicity of the material structure and elements is the focus of the college entrance examination. The recurrence rate in the examination papers is 100%. The study of 15 sets of chemical subjects throughout the country in 2008 test