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通过第四章第一节的学习,同学们已理解了质量守恒定律的涵义,能通过实验验证和解释质量守恒定律,能用原子、分子的观点正确解释质量守恒定律;通过第二节化学方程式的学习,同学们已理解了化学方程式的涵义,能描述具体化学方程式的涵义,这就为全面准确地理解质量守恒定律创造了条件。也只有在掌握了化学方程式的基础上,同学们才能全面了解质量守恒定律的各种应用。质量守恒定律有着广泛的应用,在此就不一一赘述了。本文着重谈一下在运用质量守恒定律时应注意的问题。
Through the study in the first section of the fourth chapter, the students have understood the meaning of the law of conservation of mass, can verify and interpret the law of conservation of mass through experiments, can correctly interpret the law of conservation of mass from the point of view of atoms and molecules, and pass the second quarter of the chemical equation. In the study, the students have understood the meaning of the chemical equations and can describe the meaning of the specific chemical equations, which creates the conditions for comprehensive and accurate understanding of the law of conservation of mass. Only on the basis of mastering the chemical equations can students fully understand the various applications of the law of conservation of mass. The law of conservation of mass has a wide range of applications and is not repeated here. This article focuses on issues that should be addressed when applying the law of conservation of mass.