固体颗粒密度的测量有着各种各样的测量方法,由于有些物质易溶于水,有的物质具有吸水性,特别是有些不规则的小颗粒状固体小而溶于水,给测量物质的体积带来了困难.本文中提出了一种测量物质密度的新方法,把传统实验的液体换成气体,利用理想气体状态方程,即可测量出可溶性、吸水性物质的体积,特别是可以测量小颗粒易溶于水固体颗粒的体积.测出物质的体积后,利用托盘天平秤量出物质的质量,既可以求出不规则固体颗粒的密度.本实验装置成本低,操作简单,实验现象明显. Measurement of solid particle density has a variety of measurement methods, because some materials are easily soluble in water, some substances have water absorption, in particular, some irregular small granular solid and soluble in water, to measure the volume of material Brings about the difficulty.This paper presents a new method for measuring the density of materials, the traditional experimental liquid into gas, the ideal gas equation of state, you can measure the volume of soluble, water-absorbing material, in particular, can measure small The particles are easily soluble in the volume of water solid particles.If the volume of the material is measured, the mass of the material can be measured by using a pallet balance to obtain the density of the irregular solid particles, which has the advantages of low cost, simple operation and obvious experimental phenomena.