
南一國中自然3下_ch1-4
Authored by 南一 自然
Science
9th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
關於鋅銅電池,請問下列哪些是正確的?(甲)電子由銅板經導線到鋅板;(乙)銅板失去電子變成Cu2+溶於溶液中;(丙)1莫耳的鋅溶解可使1莫耳的銅析出。
甲乙
乙
丙
甲乙丙
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若將下列金屬放到稀硫酸之中,並以導線連接,試問哪一組導線上電流方向是由甲到乙?(活性大小:鋅>鉻>鐵>錫>銅>銀)
甲:銅;乙:鐵
甲:鋅;乙:鐵
甲:鉻;乙:錫
甲:鐵;乙:錫
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
請問下列敘述何者錯誤?(甲)不同型號的圓筒式乾電池,所提供的電壓不同;(乙)一般乾電池不能充電;(丙)乾電池內的電解質是溴化銨;(丁)乾電池的鋅殼為正極。
甲乙丁
乙丙
乙丙丁
甲丙丁
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者不是可重複使用的二次電池?
鎳氫電池
鋰電池
碳鋅電池
鉛蓄電池
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者不能做為「伏打電池」電極棒的材料?
鋅片、銅片
銅片,銀片
鋅片、銀片
鋅片、碳棒
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
某伏打電池的裝置如附圖所示,圖中的檢流計指針由中央向左偏轉一段時間後,下列有關敘述,何者正確?
金屬的活性大於乙金屬
電子流由甲金屬片經檢流計流向乙金屬片
丙杯溶液的甲金屬離子數目增加
乙金屬片的重量減輕
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
關於鋅銅電池,下列敘述何者不正確?
電子自Zn板經由導線流向Cu板,所以Cu板是此電池之正極
安培計的「+」端,應接至Cu板
此鋅銅電池之化學反應式為Zn+Cu2+→Cu+Zn2+
放電中,鹽橋裡KNO3溶液中的NO3-流向正極,而K+流向負極,以保持甲、乙溶液之電中性
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