嘉嘉以燃燒匙取少量硫粉,用酒精燈點燃後,再放入氧氣瓶中燃燒。關於硫粉的燃燒情形,下列敘述何者正確?

自然八下ch.2氧化還原反應歷屆大考考題

Quiz
•
Chemistry
•
8th Grade
•
Medium
霍 建豪
Used 2+ times
FREE Resource
17 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 18 pts
(A)燃燒匙的硫粉,放入氧氣瓶中,火焰立即熄滅
(B)黃色的硫粉,燃燒時產生黃色的火焰
(C)硫粉燃燒產生的氣體,可使溼石蕊試紙變藍
(D)硫粉燃燒的時候,會產生刺激性的臭味
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何種物質的燃燒產物溶於純水後,會使藍色石蕊試紙變紅色?
(A)鎂帶
(B)硫粉
(C)鈉粒
(D)氫氣
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪一項不是CO2與SO2兩者之共同性質?
(A)水溶液呈酸性
(B)有刺激性臭味
(C)常溫常壓呈氣態
(D)可由元素在空氣中燃燒生成
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
鋅粉與氧化銅粉末在隔絕空氣的條件下混合加熱的反應如下:
Zn+CuO -----> ZnO+Cu
下列有關此反應的敘述何者正確?
(A)銅被氧化,鋅被還原
(B)氧化銅被氧化,鋅被還原
(C)與氧結合的活性:鋅<銅
(D)釋出氧的活性:氧化鋅<氧化銅
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
阿偉將放有鎂和硫的兩燃燒匙分別點火,然後各放入甲、乙兩充滿氧氣的瓶中繼續燃燒。待火焰熄滅後,分別加入少量的水,充分搖盪後,在室溫時,甲、乙兩瓶水溶液的pH值,下列何者正確?
(A)甲瓶pH值大於7,乙瓶pH值大於7
(B)甲瓶pH值大於7,乙瓶pH值小於7
(C)甲瓶pH值小於7,乙瓶pH值小於7
(D)甲瓶pH值小於7,乙瓶pH值大於7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
硫酸銅水溶液中加入下列何種物質,即可將銅離子還原成金屬銅?
(A)氫氧化鈉
(B)鐵棒
(C)鹽酸
(D)銀線
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
「金屬鈉在二氧化碳中可以燃燒,所以燃燒不一定只發生在空氣或純氧中。」關於此敘述的判斷及解釋,下列何者正確?
(A)敘述正確,鈉可與二氧化碳反應產生氧氣,幫助燃燒
(B)敘述正確,鈉的活性大於碳,可與二氧化碳反應生成碳粒
(C)敘述錯誤,物質燃燒需要氧氣,在二氧化碳中不會燃燒
(D)敘述錯誤,鈉和銅一樣都是金屬,無法燃燒
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