本课配套习题挑战模式1/5
单选题
难度系数:
1.在下列试验物质导电性的试验中,不亮的灯泡是
A: A |
B: B |
C: C |
D: D |
一次做对,真牛!
+5奖励规则>
- 提示1:5pys6aKY5L6d5pen5piv5Yik5pat6IO95aSf5a+855S155qE54mp6LSo77yM5Y+q6KaB5a2Y5Zyo6Ieq55Sx56e75Yqo55qE56a75a2Q5Y2z5Y+v44CC
- 答案:QQ==
6YW45ZKM56Kx5Z2H6IO955S156a75Ye656a75a2Q77yM5Zug5q2k5omN6IO95ZGI546w6YW45oCn5ZKM56Kx5oCn44CC5rCv5YyW6ZKg5rq25LqO5rC05Lmf5piv5Lul6ZKg56a75a2Q5ZKM5rCv56a75a2Q55qE5b2i5byP5a2Y5Zyo55qE44CC5Zug5q2k5Y+q5pyJQemhueiUl+ezluaYr+ayoeacieWvvOeUteaAp+eahOOAguWboOatpOWPquaciUHlpITnga/kuI3kuq7jgII=
本课配套习题挑战模式2/5
单选题
难度系数:
2.下列物质溶于水,形成的溶液不具导电性的是
A: 蔗糖 |
B: 氯化钠 |
C: 硫酸 |
D: 氢氧化钠 |
一次做对,真牛!
+5奖励规则>
- 提示1:5rq25ray6IO95ZCm5a+855S177yM5YWz6ZSu55yL5piv5ZCm5pyJ6Ieq55Sx56e75Yqo55qE56a75a2Q
- 答案:QQ==
6YW45ZKM56Kx5Z2H6IO955S156a75Ye656a75a2Q77yM5Zug5q2k5omN6IO95ZGI546w6YW45oCn5ZKM56Kx5oCn44CC5rCv5YyW6ZKg5rq25LqO5rC05Lmf5piv5Lul6ZKg56a75a2Q5ZKM5rCv56a75a2Q55qE5b2i5byP5a2Y5Zyo55qE44CC5Zug5q2k5Y+q5pyJQemhueiUl+ezluaYr+ayoeacieWvvOeUteaAp+eahOOAgg==
本课配套习题挑战模式3/5
单选题
难度系数:
3.为了鉴别一桶实验室用的蒸馏水是否被某种酸污染,不可取的方法是
A: 去样品用pH计测定样品的pH |
B: 测定样品的密度 |
C: 去样品滴入酚酞试液 |
D: 测试样品的导电性 |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u6aKY55uu5Lit55qE5L+h5oGv77yM55u45b2T5LqO6Ym05Yir54mp6LSo5piv6JK46aaP5rC06L+Y5piv6YW444CC
- 答案:Qw==
6JK46aaP5rC05ZGI5Lit5oCn77yMcEjnrYnkuo4377yM6ICM6YW45rq25ray55qEcEjlsI/kuo4377yM5Zug5q2kQemhueWPr+S7peeUqOadpemJtOWIq++8mzxicj7phbjmurbmtrLnmoTlr4bluqblpKfkuo7okrjppo/msLTnmoTlr4bluqbvvIzlj6/ku6XmtYvph4/moLflk4HnmoTlr4bluqbmnaXpibTliKvvvIxC6aG55q2j56Gu77ybPGJyPuiSuOmmj+awtOWSjOmFuOa6tua2sumDveS4jeiDveS9v+mFmumFnuivlea2suWPmOiJsu+8jOWboOatpEPpobnkuI3og73ovr7liLDnm67nmoTjgII8YnI+6JK46aaP5rC05LiN5YW35pyJ5a+855S15oCn77yM6YW45oCn5rq25ray5YW35pyJ5a+855S15oCn77yM5Zug5q2k5Y+v5Lul5rWL6YeP5qC35ZOB55qE5a+855S15oCn5p2l6Ym05Yir44CCROmhueato+ehruOAgjxicj7nu7zkuIrvvIzpgInmi6lD6aG544CC
本课配套习题挑战模式4/5
单选题
难度系数:
4.下列相关事实用微观粒子的知识解释错误的是
选项 | 事实 | 解释 |
A | 100mL酒精和100mL水混合后体积小于200mL | 分子之间有间隔 |
B | 酸的溶液都有相似的化学性质 | 酸都是由氢离子和酸根离子构成的 |
C | 水通电分解生成氢气和氧气 | 在化学变化中,分子可分,原子不可分 |
D | 酸、碱、盐的水溶液有导电性 | 溶液中由自由移动的带电粒子 |
A: A |
B: B |
C: C |
D: D |
一次做对,真牛!
+5奖励规则>
- 提示1:5YiG5a2Q55qE5Z+65pys54m55b6B77ya5YiG5a2Q6LSo6YeP5ZKM5L2T56ev6YO95b6I5bCP77yb5YiG5a2Q5LmL6Ze05pyJ6Ze06ZqU77yb5YiG5a2Q5a6e5Zyo5LiN5pat6L+Q5Yqo55qE77yb5ZCM56eN54mp6LSo55qE5YiG5a2Q5oCn6LSo55u45ZCM77yM5LiN5ZCM54mp6LSo55qE5YiG5a2Q5oCn6LSo5LiN5ZCM
- 答案:Qg==
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
本课配套习题挑战模式5/5
单选题
难度系数:
5.下列物质溶于水,形成的溶液不具导电性的是
A: 蔗糖 |
B: 氯化钠 |
C: 硫酸 |
D: 氢氧化钠 |
一次做对,真牛!
+5奖励规则>
- 提示1:5rq25ray6IO95ZCm5a+855S177yM5YWz6ZSu55yL5piv5ZCm5pyJ6Ieq55Sx56e75Yqo55qE56a75a2Q
- 答案:QQ==
6YW45ZKM56Kx5Z2H6IO955S156a75Ye656a75a2Q77yM5Zug5q2k5omN6IO95ZGI546w6YW45oCn5ZKM56Kx5oCn44CC5rCv5YyW6ZKg5rq25LqO5rC05Lmf5piv5Lul6ZKg56a75a2Q5ZKM5rCv56a75a2Q55qE5b2i5byP5a2Y5Zyo55qE44CC5Zug5q2k5Y+q5pyJQemhueiUl+ezluaYr+ayoeacieWvvOeUteaAp+eahOOAgg==