硅酸盐结构及其性能的辩证分析及其教学实施

Dialectic Analysis of the Structure and Properties of Silicates and Teaching Practice

从矛盾关系的角度对硅酸盐结构的辩证内涵进行了分析,并简介了在此基础上的教学实践。元素周期律的对立统一关系决定了二氧化硅结构的特殊性以及硅酸盐相对于其他含氧酸盐所展示的结构复杂性和丰富性。硅酸盐结构中网络阴离子和网络间阳离子的作用体现了破与立的矛盾关系。在含三氧化二铝的硅酸盐结构中,碱金属的存在对氧化铝在硅酸盐结构中对网络的破坏和修补的作用产生影响。在教学中培养学生对专业问题的辩证思考,对提高其创新思维的能力具有意义。

The dialectic connotation of the structure and properties of silicates in the respect of contradictions is analyzed and the teaching practice is accordingly introduced briefly.The unique structure of silicate determine by the unity - opposite law of the Periodic Table of Elements makes the structures of silicates more complicated and diverse than other oxysalts. The contradiction of destroying and construction is believed to exist in the interaction between the network anions and cations in the silicate structure. The alkali oxides is believed to have an effect on the status of the unity-opposite relationship between the roles of the construction and destroy of the network structure for aluminum oxide in silicate. It is believed that to encourage and teach students to study in dialectic way is favorable for the students to get the ability of innovative thinking.