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会测量液体的密度实验是学生必须掌握的一个重要实验,能力要求较高,液体密度测量的原理是ρ=m/V,体积V可利用量筒测出,而测量液体的质量m是关键,方法如下:首先用天平测出容器和液体的总质量m1,然后将容器中的一部分液体倒入量筒中,再用天平测出容器和剩余液体的质量m2,则量筒内液体的质量就为m=m1-m2,而如果顺序颠倒,先测容器的质量,后测容器和液体的总质量,则会使测量结果出现偏差.请看两
Will measure the density of the liquid experiment is an important experiment students must master, high ability requirements, the principle of liquid density measurement is ρ = m / V, the volume V can be measured using a measuring cylinder, and measuring the mass of liquid m is the key, the method As follows: First, the balance measured by the total mass of the container and the liquid m1, and then part of the liquid container into the measuring cylinder, and then measured the balance of the container and the remaining liquid mass m2, the quality of the liquid cylinder volume m = m1-m2, and if the order is reversed, first measure the quality of the container, after measuring the total mass of the container and the liquid, it will make the measurement results deviation.Please look at the two