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［知识要点］ １．碳硅及其化合物间的转化关系：２．硅及其化合物的结构与性质 ３．二氧化碳的化学性质(１）与固体物质作用(炼铁的还原剂）(炼铁的还原剂）(镁蒸气不能在ＣＯ２中冷却） ２ＣＯ２＋２Ｎａ２Ｏ２＝２Ｎａ２ＣＯ３＋Ｏ２（缺氧环境下作Ｏ２的来源）(２）与碱溶
[Knowledge points] 1. Conversion between carbon silicon and its compounds: 2. The structure and properties of silicon and its compounds 3. Chemical properties of carbon dioxide (1) Interaction with solid materials (reducing agent for ironmaking) (Reducing agent for ironmaking) (Magnesium vapor cannot be cooled in CO2) 2CO2+2Na2O2=2Na2CO3+O2 (O2 source in anoxic environment) (2) Alkali solution