
QUIZ 選修化學4 part 2

Quiz
•
Chemistry, Science
•
12th Grade
•
Hard
自然科陳家蓉 自然科陳家蓉
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11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
有關氧化還原反應的敘述﹐何者 "錯誤" ?
氧化是物質失去電子的反應﹐還原是物質得到電子的反應
氧化還原反應中得失的電子數相等
氧化劑失去電子﹐還原劑獲得電子
氧化反應及還原反應不能單獨發生
2.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
下列有關氧化還原反應的敘述,何者正確?
氧化還原反應一定涉及氧的得失
氧化劑與還原劑的數量一定相同
發生氧化的物質,氧化數下降
氧化還原反應必有電子的移轉
3.
MULTIPLE CHOICE QUESTION
45 sec • 10 pts
下列哪些反應中,何者"未"涉及氧化還原反應?
鐵礦煉鋼
以銅礦製造純銅
鹽酸與氫氧化鈉溶液反應
鋅銅電池運作
電解水
4.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
HSO4-中的硫的氧化數是多少?
+7
+6
+4
-2
5.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
以下反應方程式:
3CuO(s) + 2NH3(g) → 3Cu(s) + N2(g) + 3H2O(l)
哪項或哪些陳述正確?(化合物中:H氧化數多為+1,O氧化數多為-2)
(1) NH3作為氧化劑。
(2) 氮的氧化數由-3變為0。
(3) 銅的氧化數由+2變為0。
只有(1)
只有(2)
只有(1)和(3)
只有(2)和(3)
6.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
有關Zn | ZnSO4 || CuSO4 | Cu電池之敘述何者正確?
(A)電流由Zn極流向Cu極
(B)陰極為Zn極
(C)負極為Zn極
(D)放電時,Zn極變重
(E)放電時,鹽橋中的陰離子移向Cu
7.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
鋼鐵煉成的影片中,提到鑄造鋼要加入鐵的目的為何?
在合理範圍內,鋼的含碳量越高就越硬
提高鋼的熔點
增加鋼的延展性與彈性限度
增加鋼的抗氧化性與抗腐蝕性
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