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近几年高考的化学中,化学计算题具有情境新颖、信息量大、侧重于灵活运用、系统性强等特点,从内容上来反映物质的组成、结构、性质及其变化的规律。它不但能用来考查学生的记忆能力和计算能力,更能用来考查学生应用信息结合各方面知识进行判断、分析和推理、综合的思维能力。现特别介绍中学化学计算中一种重要的快速解题法——平均值法。
In the chemistry of the college entrance examination in recent years, the chemistry calculation problem has the characteristics of novel situation, large amount of information, emphasis on flexible use, and strong systematicness, and reflects the composition, structure, nature, and the law of change of the substance from the content. It can not only be used to examine students’ memory ability and calculation ability, but also can be used to examine students’ application information combined with various aspects of knowledge for judgment, analysis and reasoning, and comprehensive thinking ability. This is a special introduction to an important quick solution method in middle school chemistry calculations - the mean method.