國中自然2下ch1-2質量守恆定律
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Medium
翰林出版國中自然 翰林出版國中自然
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
碳酸鈉與氯化鈣可反應產生沉澱,如果碳酸鈉中有200個鈉原子參與反應,則生成物中含有多少個鈉原子?
100
200
300
400
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
木炭燃燒後固體的質量變小,這是因為木炭燃燒時發生什麼變化?
發生分解
發生縮小
生成的二氧化碳逸散
發生物理變化
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
燒杯中的大理石與鹽酸反應後秤得質量減少,其原因為何?
所生成的二氧化碳逸失
所生成的氧逸失
兩者所含的原子被消滅了
空氣中的氧氣沒有參與反應
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知一碳氧化合物的碳、氧重量比為3:8,當6公克的碳完全與氧化合時,則生成之化合物為多少?
16公克
22公克
32公克
64公克
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
木炭6公克燃燒生成二氧化碳22公克,則6公克木炭完全燃燒需和多少公克的純氧化合?
6公克
18公克
16公克
28公克
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
密閉容器內置入20公克碳酸鈉水溶液及20公克氯化鈣水溶液,反應後會生成碳酸鈣沉澱及氯化鈉水溶液,此時容器內物質的總質量為多少公克?
20公克
30公克
40公克
50公克
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
小新專題題目是「日常生活的食物─油條」,他在報告中提到:「部分業者使用碳酸氫銨(NH4HCO3)做為食品膨鬆劑,在高溫油炸的過程中,碳酸氫銨會分解產生三種氣體,使緊實的麵糰迅速膨脹成膨鬆的油條。」上述產生的三種氣體中,不可能含有下列何者?
氨氣
氯化氫
水蒸氣
二氧化碳
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