下列说法不正确的是( ) A. 硬水是指含有较多可溶性钙、镁化合物的

下列说法不正确的是(  )

A. 硬水是指含有较多可溶性钙、镁化合物的水    B. 用肥皂水可以检验硬水和软水

C. 水的蒸发和水通电分解都属于物理变化    D. 净化水的方法有吸附、沉淀、过滤和蒸馏等

答案

C

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