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东北版高中化学第一章讲过盐之后,开始讲卤素,然后依照周期表的次序由右到左讲到硫,第四第五两章讲氮族元素的氮和磷。第四章氮的内容很多与旧的教本不同,是这一章的特点。现在根据个人的意见逐条提出,加以讨论,请读者指正。(1)氮的性质“本节讲氮的物理性质和氮对动植物的紧密关系,并不像以前各教本必先谈到氮的化学性质和用途。因为氮的重要化学性质,如在常温不活泼、在高温与氧反应生成氧化氮再由氧化氮生成酸、与氢生成氨、由
Northeastern version of high school chemistry talked about the first chapter of salt, began to say halogen, and then in accordance with the order of the periodic table speaking from right to left sulfur, the fourth five chapters two nitrogen and nitrogen phosphorus. Chapter IV A lot of the content of nitrogen is different from the old one, is the characteristic of this chapter. Now based on individual opinion put forward one by one, to be discussed, please correct me. (1) The Nature of Nitrogen "This section does not discuss the physical properties of nitrogen and the close relationship between nitrogen and animals and plants, as we have to talk about the chemistry and uses of nitrogen first, because of the important chemical properties of nitrogen, such as at room temperature Inactive, at high temperature and oxygen reaction of nitric oxide generated by the nitric oxide to generate acid, ammonia and hydrogen, from