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黑箱问题是喻指那些内部构造和机理还不清楚的研究对象或系统．黑箱方法是一种科学方法．通过对黑箱问题的外部情况或掌握的部分信息进行分析综合，去认识和把握“黑箱”的内部结构和功gs．在中学化学教学中，很多问题亦属此类，现举几例说明．［例1］用10g脱脂棉花制得15．6g?
The black box problem is a metaphor for those objects or systems whose internal structure and mechanism are unclear. The black box method is a scientific method. Through analyzing and synthesizing the external situation of the black box problem or some of the information it grasps, it is necessary to recognize and grasp the internal structure and power of the “black box.” In chemistry teaching in middle schools, many problems are similar to this one. Here are some examples. [Example 1] 15.6g is made of 10g of defatted cotton?