【題目】有兩個(gè)集氣瓶，分別充滿空氣和氮?dú)�，試用�?jiǎn)單的方法加以鑒別。

________________________________________________________________________。

【答案】用燃著的木條分別伸入兩個(gè)集氣瓶中，木條繼續(xù)燃燒的是空氣，木條立即熄滅的是氮?dú)?/span>

【解析】

試題分析：氮?dú)獠恢С秩紵諝庵泻兄С秩紵难鯕�，所以可以：用燃著的木條分別伸入兩個(gè)集氣瓶中，木條繼續(xù)燃燒的是空氣，木條立即熄滅的是氮?dú)狻?/span>

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