107國中自然2下_3-2
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Other
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7th - 9th Grade
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Practice Problem
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Medium
Yu Liu
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
姿瑩以附圖的裝置測試相同濃度的硫酸、醋酸、葡萄糖、酒精水溶液之導電性,請問這些水溶液中,何者可使裝置圖中的燈泡最亮?
硫酸
醋酸
葡萄糖
酒精
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電解質水溶液可以導電,主要是因為電解質在水中會解離出下列哪一種粒子?
原子
離子
中子
分子
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
氯化鈉溶於水會生成帶正電的鈉離子及帶負電的氯離子,主要是因為下列何者的移動所致?
中子
質子
電子
原子
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電解質水溶液中,應含有什麼離子?
僅有正離子
僅有負離子
不含有離子
正、負離子皆有
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將下列四種物質配製成相同濃度的水溶液,再用相同的導電裝置測試,則哪一種溶液的導電效果最差?
醋酸
氫氧化鈉
硝酸鉀
硫酸
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列有關電解質溶液通電時的敘述,何者正確?
正離子會往正極移動
負離子會往負極移動
溶液中的正電荷總電量恆等於負電荷的總電量
正離子個數必與負離子相等
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者的水溶液呈電中性?甲.蔗糖;乙.醋酸;丙.氯化鈉。
甲
乙
丙
甲乙丙
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