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化学方程式是继元素符号、化学式之后又一重要的化学用语,同时也是学好化学的基本技能之一,对整个化学的学习有着重要的意义,也将贯穿整个初中化学学习的始终。一、知识点分析(一)质量守恒定律1.概念:参加化学反应的各物质的
The chemical equation is another important chemical term after the element symbol and chemical formula. It is also one of the basic skills for learning chemistry. It has important significance for the study of the entire chemistry, and it will also run throughout the chemistry study of junior middle school. First, the analysis of knowledge points (a) the law of conservation of quality 1. Concept: the participation of various substances in chemical reactions