九年级化学上册第1章开启化学之门第1节化学给我们带来什么拓展素材沪教版.doc

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1第一章第一节化学给我们带来什么之拓展信息社会:用半导体材料硅和锗的单向导电性能,制成的大规模集成电路,用于计算机的贮存器、记忆、控制,光导纤维为通迅提供保证,等这一切都要化学工作者来付出努力。当然化学是一把双刃剑,不真正全面了解而蛮干、盲目的生产,就会对环境造成负面影响。当前人类面临的环境问题如:大气污染、温室效应,臭氧空洞,水源污染、白色污染等等。因此,化学工作者,提出了绿色化学(green chemistry),绿色化学的核心就是要利用化学原理从源头消除污染。绿色化学给化学家提出了一项新的挑战。国际上很重视。1996 年美国设立了“绿色化学挑战奖“。绿色化学将使化学工业改变面貌,为子孙后代造福。绿色化学的提出,使更多的化学生产工艺和产品向着环境友好的方向发展,化学必将使世界变得更加绚丽多彩。

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