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蜡烛燃烧后变成了什么?

本站新(短)域名:xiguashuwu.com

蜡烛燃烧后变成了什么?

蜡烛点燃以后会越烧越短,直至"烧没"了。其实蜡烛并没有真的"烧没"了,只是变成了另外的wu质。蜡烛的主要成分是碳氧化合wu,燃烧过程中它与空气的氧气发生反应,生成水和二氧化碳。科学家在观察蜡烛燃烧的全过程时发现,蜡烛烧完以后所生成的水和二氧化碳的质量,正好等于蜡烛的质量与蜡烛燃烧时所消耗的氧气质量之和。这就是说,构成蜡烛的wu质并没有消失,只是变成别的wu质罢了。其实世界上一切wu质都是这样的,wu质之间变来变去,变化无穷,但是它们在变化前后的总质量是相等的。

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