Code:ML268

名稱 石墨	Name Graphite
化學公式 碳	Chemical Formula C
莫氏硬度 1-3	Mohs scale of Hardness 1-3
描述 石墨的顏色是鐵黑色到鋼灰色。透射光中呈深藍色.它的條紋是黑色的，光澤是泥土的,金屬的.具片狀斷裂，若不解理則較粗糙,易溶於熔融鎳,溫熱的氯硫酸中。	Description Graphite’s colour is iron-black to steel-gray; deep blue in transmitted light. Its streak is black.Luster is earthy, metallic. Owning flaky fracture, otherwise rough when not on cleavage.Soluble in molten nickel, warm chlorosulfuric acid.
小挑戰 詞源？ 從歷史上講，石墨被稱為黑鉛或石墨。 石墨通常以其大量的礦物形式使用。 這兩個名稱都源自與相似外觀的鉛礦石（特別是方鉛礦）的混淆。 鉛的拉丁語是鉛，它的英文名稱是這種灰色金屬光澤礦物質的英文名稱，甚至是鉛草，鉛花等帶有這種顏色花的植物。黑鉛通常是指粉末狀或加工過的石墨 ，亞光黑色。	Challenge Other names  Historically, graphite was called black lead or plumbago. Plumbago was commonly used in its massive mineral form. Both of these names arise from confusion with the similar-appearing lead ores, particularly galena. The Latin word for lead, plumbum, gave its name to the English term for this grey metallic-sheened mineral and even to the leadworts or plumbagos, plants with flowers that resemble this colour.The term black lead usually refers to a powdered or processed graphite, matte black in color.

Reference：https://en.wikipedia.org/wiki/Graphite

By 4A Cheung Sze Wing 04 on 19 April 2021