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质量守恒定律是重要的化学定律。正确理解和应用质量守恒定律是初中化学课程标准的要求。化学反应遵守质量守恒定律,应从多角度加以理解,即宏观上体现元素守恒、物质的总质量守恒;微观上体现原子的种类、数目、质量守恒。应用此定律解决一些实际问题是初中化学教学的基本要求。
The law of conservation of mass is an important chemical law. Correct understanding and application of the law of conservation of mass is the requirement of junior high school chemistry curriculum standard. Chemical reaction to comply with the law of conservation of mass, should be understood from a multi-angle, that is, macroscopically reflects the conservation of elements, the total mass of matter conservation; Microscopic reflects the type of atom, the number of conservation of mass. Applying this law to solve some practical problems is the basic requirement of junior high school chemistry teaching.