一、有关物质的量的基本概念1.物质的量:物质的量是国际单位制中七个基本物理量之一,物质的量的符号为n.像“长度”、“质量”、“时间”、“电流”、“热力学温度”、“发光强度”等一样,“物质的量”是一个物理量的专有名词.物质的量四个字应作为一个整体来理解和使用,是不能拆开或增减任何文字的.物质的量是计量含有一定数目微观粒子的集体的一个物理量.其中,微观粒子可以是分子、原子、离子、原子团、电子、质子、中子等基本粒子,也可以是这些基 First, the basic concept of the amount of material 1. The amount of material: the amount of material is the International System of Units of the seven basic physical quantities of one, the amount of the symbol of substance n. Like “length ”, “quality , ”Time “, ”current “, ”thermodynamic temperature “, ”luminous intensity “ and the like, ”quantity of matter " is a proper noun of the physical quantity. Should be understood and used as a whole, can not be disassembled or added to any text.The amount of material is to measure a physical quantity containing a certain number of micro-particles of the collective.Micro-particles can be molecules, atoms, ions, atomic groups, Electrons, protons, neutrons and other basic particles, but also can be these groups