
7.1 空氣
Authored by Tsang (TSY)
Science
7th Grade
Used 14+ times

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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
空氣中成份佔最多的氣體是?
氮 Nitrogen
氧 Oxygen
二氧化碳 Carbon Dioxide
水氣 Water Vapour
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
氧氣佔空氣的
不定量
78%
21%
0.04%
3.
OPEN ENDED QUESTION
5 mins • Ungraded
寫出其中一種檢測二氧化碳的方法。
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4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以上是某氣體的檢測結果,這氣體是:
水汽
氧
二氧化碳
氮
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪一個不是二氧化碳的特性?
助燃
無色無味
密度比空氣高
在-78°C 會直接由固態轉變成氣態
6.
OPEN ENDED QUESTION
5 mins • Ungraded
舉出氧在日常生活中的一項用途。
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