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原电池知识是中学化学中的重要基本概念,也是近年来高考的热点。在实际教学中,学生最感到困惑的是燃料电池电极反应式和电池总反应式的书写。其实这种题本身并不难,笔者在与学生交流的过程中发现,解题过程中思路不清晰、书写紊乱是主要错因。在讲解时如果教师稍作一点技术处理,会让学生省很多事,也不易失分。下面笔者结合教学经验,借助例题来探讨这类试题的解答方法。
The original battery knowledge is an important basic concept in middle school chemistry, but also hot in college entrance examination in recent years. In the actual teaching, students are most puzzled by the fuel cell electrode reaction and battery total reaction writing. In fact, this problem itself is not difficult, the author in the process of communication with students found that the process of solving problems is not clear, writing disorder is the main reason. When teachers explain a little bit of technical processing, students will save a lot of things, but also not easy to lose points. The following combination of teaching experience, with examples to explore the answer to such questions.