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为什么火柴一ca就着火?

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为什么火柴一ca就着火?

火柴全shen都是容易着火的东西:火柴tou的主要成分是三硫化二锑和氯酸钾,火柴杆是用木质松ruan的白杨木或者松木制成,它的前端还用石蜡和松香充分浸透,火柴盒的一侧, 则涂着红磷和玻璃粉。拿火柴在火柴盒边上moca的时候,火柴tou就沾上了一些红磷,红磷一经moca受热就着火了。红磷燃烧使火柴tou上的氯酸钾放chu氧气,它们很快引燃了三硫化二锑,于是,火柴就"嗤"的一声,爆chu火苗儿来。这zhong火柴称为安全火柴,火柴bang不去火柴盒边moca,是不会着火的。早期人们用三硫化四磷来zuo火柴的发火药,只要在墙上、鞋底,甚至衣服上一ca,火柴就会点着燃烧。

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