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化学计算是中学化学基础知识和基本技能的重要组成部分,是从物质量的变化的角度来研究物质及其变化规律的。它既是学习化学必须掌握的知识点,也是生产、生活实际中离不开的知识,更是中考命题的必考知识点之一,选择题、填空题、计算题各种题型中都可出现,通过此类题可以考查我们综合分析、判断、解决实际问题的能力,因此被命题者广泛使用。不过近几年的中考题中不再是单纯的考查计算,而是把计算题和生活中的实际情景结合起来,并且数据也不是直接给出,
Chemistry calculation is an important part of the basic knowledge and basic skills of chemistry in middle schools. It is to study the matter and its changing rules from the perspective of changes in the quantity of substances. It is not only the knowledge that learning chemistry must master, but also the knowledge that can not be separated from the actual production and life. It is also one of the necessary knowledge for the entrance exams. Multiple choice questions, blank questions, calculation questions can appear in all kinds of questions. , Through such questions can examine our ability to comprehensively analyze, judge, solve practical problems, it is widely used by the proponents. However, in recent years, the senior high school entrance examination questions are no longer a simple test calculation, but the calculation questions and the actual situation in life combine, and the data is not given directly,