[請益] O2 氧氣 是元素還是化合物?
各位前輩好
歐兔O2 為什麼是歸類在元素而非化合物?
是因為它不是由兩種以上的元素構成的嗎?
所以7a族那些都是元素?
一個氧是氧原子才是元素不是嗎?
歐兔不是氧分子嗎?
這個問題一直困擾我,為求無過,一直是照答案給學生的,所以請教一下正解究竟如何?
謝謝!
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※ 編輯: plishaccom (220.143.162.129), 01/26/2015 02:05:16
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