燃燒需要空氣,指的是燃燒主要需要空氣中的哪一個氣體?

五上自然3-1、3-2

Quiz
•
Chemistry
•
5th Grade
•
Medium
王岑娜 王岑娜
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12 questions
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1.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
將雙氧水倒進裝有金針菇的廣口瓶中,會有什麼現象發生?
起火燃燒
金針菇會發芽
金針菇會溶解
產生大量氣泡
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
用廣口瓶逐漸往下罩住燃燒中的蠟燭時,蠟燭的火焰會逐漸變小;如果這時候把廣口瓶拿開,會有什麼變化?
燭火會變得比罩住時小
燭火會變得比罩住時大
燭火會馬上熄滅
沒有任何變化
4.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
空氣的組成中,下列哪一種成分的氣體含量最多?
5.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
食品包裝內添加哪一種不易和物質反應的氣體,可以避免食品腐壞?
6.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
爸爸在製作麵包時,加入酵母菌進行發酵,會產生哪一種氣體使麵包蓬鬆?
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
將點燃的線香放入放入廣口瓶中充滿金針菇和雙氧水反應後所收集到的氣體,這時線香會有什麼變化?
線香會燃燒的更旺盛
線香會逐漸熄滅
線香會立刻熄滅
沒有任何變化
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