
113-2-Ch1-3.1習作題
Authored by 楊 秉正
Chemistry
8th Grade

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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
氯化鈣(CaCl2)水溶液在導電時,水溶液中解離的情形與離子移動的方向,下列何者正確?
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知化合物X在水中是一種電解質,分析人員偵測
只含化合物X的甲∼丁四杯不同濃度的水溶液,並
將化合物X解離出的陰、陽離子數目作圖,如右圖
所示。由圖判斷下列何者最不可能是化合物X ?
Na2SO4
K2SO4
NaCl
Na2CO3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列有關煉鐵的敘述,何者錯誤?
煉鐵產物的含碳比例,影響鐵的硬度與用途
冶煉出的鐵並非純鐵,含碳量低、硬度高,稱為生鐵
冶煉是運用氧化還原法,以煤焦還原氧化鐵
鐵礦中的Fe2O3可被冶煉為鐵
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪一個日常生活現象,並不屬於氧化還原反應?
金屬生鏽
小蘇打粉加熱產生氣體
利用漂白水漂白衣物
游泳池採用氯氣消毒,消滅水中的病菌
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在CuO+H2 →Cu+H2O反應式中,下列何者被氧化?
H2
Cu
H2O
CuO
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
點燃的鎂,可以在裝有二氧化碳的集氣瓶中繼續燃燒,關於這個現象,下列敘述何者正確?
碳比鎂更易與氧化合
二氧化碳可以把鎂氧化
氧化鎂容易把碳氧化成二氧化碳
二氧化碳可以把鎂還原
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
日常生活中,許多金屬製品表面會鍍上一層薄薄的鋅,以達到防鏽目的。關於防鏽作用的敘述,下列何者正確?
如果鍍鋅厚度太厚,對氧的活性太大,反而不能防鏽
鋅不容易氧化,所以可以隔絕氧氣,達到防鏽目的
鋅能與鐵結合成合金,因而降低鐵的活性,故不易生鏽
鋅容易氧化形成緻密氧化鋅,可避免內部金屬氧化而生鏽
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