空氣的組成中，下列哪一種氣體含量第二多，約有21%？, 氮氣, 氧氣, 氫氣, 二氧化碳, 用廣口瓶罩住燭火，下列哪一個現象不可能發生？, 燭火劇烈燃燒, 燭火慢慢變小, 瓶身有點熱熱的, 燭火最後會熄滅, 線香可以燃燒的原因是什麼？, 空氣占有空間, 空氣可以被壓縮, 空氣中有氧氣, 空氣無色無味, 下列哪一組物品可以製造氧氣？, 小蘇打粉+雙氧水, 醋+小蘇打粉, 金針菇+小蘇打水, 金針菇+雙氧水, 利用下列哪一項器材或物品可以檢驗氧氣是否具有助燃性？, 點燃的線香, 蓋上瓶蓋的酒精燈, 熄滅的蠟燭, 空的寶特瓶.
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CH4活動1空氣與燃燒有什麼關係
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Knshdigital
小五
自然
物質的性質
物質的變化
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