水是地球上最普遍、最常见的物质之一,人类的日常生活离不开水。

水是地球上最普遍、最常见的物质之一,人类的日常生活离不开水。下列有关水的说法正确的是

    A.水蒸发后,化学性质发生了变化

    B.水电解生成氢气和氧气,说明水中含有氢分子和氧分子

    C.冰块与水混合得到混合物

    D.明矾可用于净水

 

答案

D

解析:略

 

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