酸碱概念的扩展人们对于酸碱的认识是从它们所表现的现象开始,认为酸是具有酸味的物质,碱是抵消酸性的物质。酸和碱反应,酸味就消失。酸也使若干植物的有色物质改变颜色,碱则便改变的颜色恢复原色。到十八世纪后期,化学研究才从物质本身的内在性质来认识酸碱。拉瓦西提出氧元素是酸的必要成分,氧的外文命名 The concept of acid-base extension People’s understanding of acid-base is from the phenomenon they appear, that the acid is sour substances, alkali is to offset the acidic substances. Acid and alkali reaction, sour disappear. Acids also change the color of a number of plants’ colored materials, while the alkali reverts to the original colors. By the late eighteenth century, chemical research recognized acid and base from the intrinsic properties of matter itself. Lavoisier made the oxygen element is an essential component of acid, foreign name of oxygen