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cheng yu zhong de hua xue
Author(s): 
Pages: 62-63
Year: Issue:  Z2
Journal: Required Reading for Junior Middle School Students

Keyword:  简易鉴别金属光泽黄色物质高温灼烧金屑金粒矿蜡高级脂肪酸一元醇石面;
Abstract: <正>真金不怕火炼黄金与其他具有金黄色金属光泽的固体(如黄铜及黄铜矿、黄铁矿)的简易鉴别方法是:高温灼烧.这是因为金的化学性质很不活泼,即使加热至熔化(熔点为1064℃)也不与空气中的氧气或氮气等反应,依然能保持金光闪闪而不变质;而黄铜等金黄色物质经不住烈火的考验而变质、变色.因此,常用"真金不怕火炼"
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