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新编六年制重点中学高中课本化学第二册,第一章第三节增添了证明水是极性分子,CC(?)_4是非极性分子的演示实验,它以宏观的生动的实验现象揭示了抽象的微观的事实,调动了学生学习化学的兴趣。在演示实验过程中,会出现一些有碍学生形成正确概念的现象,如用带电量较大的玻璃棒或塑料棒分别过分靠近细水流和细 CC(?)_4液流时,会看到细
New six-year key high school textbook chemistry secondary school, the first chapter third added water to prove that water is a polar molecule, CC (?) _4 is a non-polar molecule demonstration experiment, which macroscopically vivid experimental phenomena Revealed the abstract micro-facts, mobilized students interest in learning chemistry. During the demonstration experiment, some phenomena that may hinder the students from forming the correct concept may appear. For example, when the glass rod or the plastic rod with larger charges are placed too close to the thin water flow and the fine CC (?) _ 4 liquid flow respectively,