
2-1氧氣
Authored by chiu L
Science
5th Grade
Used 9+ times

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25 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
利用廣口瓶和燃燒中的蠟燭進行燃燒是否需要空氣的實驗時,下列哪一項做法是不正確的?
2.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
下列哪一項不是燃燒的例子?
3.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
燃燒需要空氣,指的是燃燒主要需要空氣中的哪一種氣體?
4.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
用火點燃線香,線香可以燃燒的原因是什麼?
5.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
下列哪一種物品可以用來檢驗瓶中是否有氧氣存在?
6.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
將點燃的線香伸入裝有氧氣的瓶中,線香會燃燒得更旺盛,由此現象可知氧氣具有什麼特性?
7.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
用廣口瓶逐漸往下罩住燭火,燭火逐漸變小,此時拿掉廣口瓶,蠟燭又能繼續燃燒,這種現象可以證明什麼?
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