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笔者认为人教版新教材九年级《化学》上册,有几处实验图示编排有不当之处。1 错误的操作示意图教材第126页图7-8的第三幅图(见图1),点燃一支蜡烛放在烧杯中,然后加适量碳酸钠和盐酸溶液,观察
The author believes that there are a few experimental plots that are inappropriate in the first edition of the new edition of the People’s Education Press. 1 Incorrect operation diagram The third image of Figure 7-8 on page 126 of the textbook (see Figure 1) lights a candle in a beaker, and then adds appropriate amount of sodium carbonate and hydrochloric acid solution.