论文部分内容阅读
近来有一些书刊将金属铝既能溶于酸、也能溶于碱称为铝的两性。笔者觉得,元素的单质既能与酸作用,又能与碱作用不能叫做元素的两性,这是因为:一、什么叫两性?两性是针对物质的酸性和碱性而言的,如果某物质既具有酸的性质(与碱作用),又具有碱的性质(与酸作用),则该物质就具有两性,而单质是不具备酸性或碱性的、因此不能说铝单质具有两性。二、“两性”能否理解为既具“金属性”又具“非金属性”呢?不能！单质的性质一般是指金属性、非金属性、惰性。即使单质的性质是介于金属与非金属之间(如周期表对角线上的几种元素),也不能叫做“两性”,一般是称为“准金属性”或“半导体性”。更何况铝单质还具有较典型的金属性呢,因此从这方面看,也不能说铝具有两性。
Recently, there are some books and magazines that have metal aluminum that is both soluble in acid and soluble in the alkalinity called aluminum. The author believes that the elemental element can both interact with the acid, but also with the alkali can not be called the element of the sex, this is because: First, what is called the gender? Gender is for the material’s acidity and alkalinity, if a substance both With the nature of the acid (with the base), and the nature of the base (with the role of acid), then the substance has both sex, and the element is not acidic or alkaline, so it can not be said that the aluminum element has both sex. Second, can the “bisexuality” be understood as having both “metallic” and “non-metallic”? The nature of simple substances generally refers to metallic, non-metallic, inert. Even if the nature of the element is between the metal and the non-metal (such as several elements on the diagonal of the periodic table), it can not be called “bisexual”, generally called “quasi-metal” or “semiconductivity”. What’s more, aluminum is also more typical of metal, so from this point of view, it cannot be said that aluminum has sex.