现有以下物质：①NaCl晶体；②液态SO2；③液态醋酸；④汞；⑤固体BaSO4；⑥纯蔗糖（C12H22O11）；⑦酒精（C2H5OH）；⑧融化的KNO3．请回答下列问题（用序号）：（1）以上物质能导电_刷题宝

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现有以下物质：①NaCl晶体；②液态SO₂；③液态醋酸；④汞；⑤固体BaSO₄；⑥纯蔗糖（C₁₂H₂₂O₁₁）；⑦酒精（C₂H₅OH）；⑧融化的KNO₃．请回答下列问题（用序号）：

（1）以上物质能导电的是____ ；

（2）以上物质属于电解质的是____ ；

（3）以上物质属于非电解质的是____ ；

（4）以上物质中溶于水后形成的水溶液能导电的是____ ．

上一题下一题 0.0难度选择题更新时间:2018-11-30 06:17:56

答案(点此获取答案解析）

④⑧,①③⑤⑧,②⑥⑦,①②③⑧

同类题1

My family are going to ____.

同类题2

根据下列短文，选择最佳选项。

Sam likes soccer. He always watches soccer games on TV. His wife (妻子) Nina likes watching TV plays (电视剧). One evening at 7:00, Sam watches an interesting soccer game on TV. The TV also has a good TV play. It is Nina's favorite. She wants to watch it very much, but Sam sits before (在……之前) the TV. He doesn't let Nina watch the TV play. Nina is not happy, so she goes to her mother's home at 7:30 in the evening. When she comes into her mother's home, her father watches that soccer game, too.

“Where is my mother, Dad?”asks Nina.

“She goes to your grandma's home,”says her father.

“Why?”

“I want to watch the soccer game, but she likes to watch a TV play.”

同类题3

“藕断丝连”的“丝”属于（）

同类题4

）内有定义．对于给定的正数K，定义函数

．若对任意的

，则（ ▲ ）

同类题5

如图所示，水平放置的两平行金属板间有一竖直方向匀强电场，板长为L，板间距离为d，在距极板右端L处有一竖直放置的屏M，一带电量为q，质量为M的质点从两板中央平行于极板射入电场，最后垂直打在M屏上．以下说法中正确的是（）

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