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现行中学化学实验中仍然存在的实验空白区域,一是实验内容空白,即该做的实验或可做可不做的实验,教材中没有安排;二是实验仪器空白,即有些实验内容教材中虽然作了安排,但缺乏操作更为简单的专用仪器,实验操作繁琐或实验效果不佳。我们在教学实践中尝试利用日常生活中的废旧物品填补实验空白,取得了良好的教学效果。一、实验内容空白填补现行新课标版初、高中化学教材中虽然提到点燃不纯氢气、点燃或光照氢气与氯气混合气体可能发生爆炸,但并
The current experimental high school chemistry experiment blank area, first, the experimental content of the blank, that is to do the experiment or do not do experiments, textbooks are not arranged; Second, the experimental apparatus is blank, that is, some experimental textbooks although The arrangement, but the lack of more simple operation of special equipment, cumbersome experimental operation or experimental results are not good. We try to use the daily life of waste materials in teaching practice to fill the gap, and achieved good teaching results. First, the contents of the experiment blank fill the current new curriculum version Although the high school chemistry textbooks mentioned ignite impure hydrogen, light or hydrogen gas mixture of hydrogen and chlorine may explode, but