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所谓隐含条件,通常是指题目中含而不露的已知条件,若能充分挖掘题目中的隐含条件,并能加以利用,常常可使问题得到迅速而巧妙的解决。教师在平时教学中应注重对学生这方面的训练和培养,开拓学生的视野,帮助学生提高解题能力。本文就初中化学试题略举几例。1 条件隐含在题目的字里行间中 例1 将足量的铁粉加入盐酸和氯化铜的混合溶液中,反应完全后,过滤,称得滤渣的质量与加入的铁粉质量相同。则混合溶液中分别
The so-called implied conditions usually refer to known conditions that are not included in the topic. If the implicit conditions in the topic can be fully exploited and can be used, problems can often be solved quickly and ingeniously. In the usual teaching, teachers should pay attention to the training and training of students in this area, open up the students’ vision, and help students improve their problem-solving abilities. This article gives a few examples of junior high school chemistry test questions. 1 Conditions are implicated in the middle of the title. Example 1 A sufficient amount of iron powder is added to a mixed solution of hydrochloric acid and cupric chloride. After the reaction is completed, it is filtered and the quality of the residue is the same as that of the iron powder added. Then mix the solution separately