密度在社会生活及现代科学技术中应用十分广泛,对未知物质密度的测量具有重要的现实意义.下面我们来探究如何测量物质的密度.一、测量固体的密度提出问题:如何测出不规则固体的密度?实验原理:ρ=m/V,即用天平测出不规则固体的质量m,再用量筒测出不规则固体的体积V,求出不规则固体的密度.实验器材:天平、量筒、细线、石块、清水.设计并进行实验: Density in social life and modern science and technology is widely used in the measurement of unknown material density has important practical significance. Now let us explore how to measure the density of the material. First, the measurement of solid density Ask the question: how to measure the irregular solid The density of? Experimental principle: ρ = m / V, that is measured by the balance of the quality of irregular solid m, and then measuring the volume of irregular solids Volume V, get the density of irregular solids. Experimental equipment: balance, , Thin lines, stones, water. Design and experiment: