常見市售的洋竽片包裝填入下列哪一種氣體以保持新鮮?
2-3 空氣的組成與性質

Quiz
•
Physics, Chemistry
•
8th - 9th Grade
•
Hard
JOESPH HSU
Used 20+ times
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23 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
氬
氧
氦
氮
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列有關二氧化碳的敘述,何者錯誤?
液態的二氧化碳稱為乾冰
不助燃
可使澄清石灰水變白色混濁
壓力加大,在水中的溶解度會變大
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列有關惰性氣體的敘述,何者錯誤?
氦的活性很大,若代替氫填充氣球,容易爆破
填入氖的燈管通電後會發出紅光,可做信號燈或霓虹燈
空氣中含量最多的稀有氣體是氬氣
焊接金屬時使用氬氣可防止金屬與氧反應
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知有三種氣體:空氣、氧氣、二氧化碳,用什麼物質或方法可以容易地把三者分辨出來?
通入水中,看溶解度大小
分別放入一張藍色石蕊試紙
倒入澄清石灰水
把點燃的火柴放入
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關雙氧水製備氧氣及檢驗其性質的實驗,下列敘述何者錯誤?
可加入二氧化錳加速反應
氧氣產生時應立即開始收集
使用排水集氣法收集
氧氣可使線香燃燒更旺盛
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
鈺暄想要在實驗室製造二氧化碳,她應該選用下列哪些藥品?(甲)雙氧水;(乙)稀鹽酸;(丙)二氧化錳;(丁)大理石;(戊)硝酸鉀。
甲乙
甲丙
乙丙戊
乙丁
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
大理石加鹽酸後,最初30秒左右冒出的氣體不收集的理由是什麼?
沒有二氧化碳
產物不是二氧化碳
太多二氧化碳
混有大量空氣,不是純的二氧化碳
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