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质量守恒定律是初中化学的重点知识,各地中考试卷中都会出现相关的试题。现解析2002年各地中考几例典型试题,供大家复习参考。例1某化工厂进行电解食盐水生产,电解食盐水不能生成的是A.NaOH B.HNO3C.H2 D.Cl2
The law of conservation of mass is a key knowledge of junior middle school chemistry. Related test questions will appear in various examination papers. Now analyze a few typical exam questions for the local exams in 2002 for everyone to review. Example 1 An electrolytic plant produces salt water for production. The electrolytic salt solution cannot produce A.NaOH B.HNO3C.H2 D.Cl2.