
112-8下自然習作ch1
Quiz
•
Science
•
8th Grade
•
Practice Problem
•
Medium
林 炳弘
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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
氫氣與氧氣燃燒產生水的化學反應式為:2H2+O2→2H2O,已知0.2公克的
氫氣與1.6公克的氧氣完全反應後產生X公克的水,請推測X應為何?
1.0
1.8
2.0
2.4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
根據圖中資訊,若將0.3公克的鎂完全燃燒,需要多少公克的氧氣參與反應?
0.2
0.3
0.5
1.0
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若小軒取0.9公克的鎂與0.4公克的氧氣完全燃燒,最多可以產生多少公克的氧化鎂?
0.5
1.0
1.3
1.5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若小軒想獲得2.0公克的氧化鎂,則他最少需要取鎂和氧氣各多少公克?
鎂0.8公克、氧氣1.2公克
鎂0.9公克、氧氣1.1公克
鎂1.0公克、氧氣1.0公克
鎂1.2公克、氧氣0.8公克
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
沛沛將一盛有碳酸鈉水溶液的試管,放入盛有氯化鈣水溶
液的寶特瓶中,以瓶蓋鎖緊,並秤其總質量為165.5公克。
若沛沛將寶特瓶自電子秤取下並傾倒,使瓶內兩種溶液
混合在一起,請推測沛沛將會觀察到瓶內發生何種現象?
產生白色沉澱
產生氣體
水溶液變成紅色
沒有任何變化產生
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
沛沛將一盛有碳酸鈉水溶液的試管,放入盛有氯化鈣水溶
液的寶特瓶中,以瓶蓋鎖緊,並秤其總質量為165.5公克。
兩種溶液混合後,再將寶特瓶放回電子秤測量,可推測其總質量為何?
因反應產生新物質,故大於165.5公克
因反應產生沉澱,故大於165.5公克
因反應產生氣體,故小於165.5公克
反應前、後質量不變,故等於165.5公克
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知碳的原子量為12,請判斷下列敘述何者正確?
1個碳原子的質量為12公克
1莫耳碳原子的質量為12公克
12個碳原子的質量為1公克
1個碳原子的質量為12莫耳
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