初中物理课本第二册第117页写道,“古希腊人发现用毛皮或毛织物摩擦过的琥珀能够吸引羽毛、头发等轻小物体”.那么“琥珀”是一种何物?“琥珀”是由碳氢氧组成的有机物.化学成分为C_(20)H_(32)O_2;非晶质体,色蜡黄至红褐,一般透明,树脂光泽,贝壳状断口,硬度2～2.5,性脆,密度约为1×10~3kg/m~3;燃烧时有香气;质优的用于装饰品,质差 The physics textbook for junior high school writes on page 117 of Book 2, “The ancient Greeks discovered that amber rubbed with fur or wool can attract light and small objects such as feathers and hair.” Then what is “amber”? “Amber” It is composed of carbon dioxide and oxygen. The chemical composition is C_(20)H_(32)O_2; amorphous, yellow to reddish brown, generally transparent, resin luster, conchoidal fracture, hardness 2 to 2.5, brittleness , The density is about 1×10~3kg/m~3; there is aroma when burning; the quality is used for decorations, and the quality is poor