题目:
用你所学的化学知识解释下列各小题:
(1)如图A,敞口放置的酒精灯不会燃烧的原因是
(2)如图B,长期敞口放置的酒精灯无法点燃的原因是
(3)如图C,燃烧的酒精灯盖上灯帽后会熄灭的原因是
(4)小木块比小煤块容易被点燃,说明可燃物燃烧与 有关;木炭在氧气中比在空气中燃烧剧烈,说明可燃物燃烧的剧烈程度与 有关;刨木花比木块更容易燃烧,说明可燃物燃烧与 有关。
答案:
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