我们知道自然界中物质存在固态、液态、气态三种状态,三态之间可以进行相互转化.在相互转化过程中,物体的体积也会发生变化,如液体在汽化时,体积改变可达上千倍,而在凝固时,体积大约减少10%.同种状态下的物体一般都具有热胀冷缩的特性,但冰在融化成水时,体积却减少约10%,水在+4℃时却具有热缩 We know that there are three states in the nature: solid, liquid, and gaseous. The three states can be transformed into one another. During the process of mutual transformation, the volume of the object also changes. If the liquid is vaporized, the volume can change by thousands. Times, but when solidified, the volume is reduced by approximately 10%. Objects in the same state generally have the characteristics of thermal expansion and contraction, but when ice melts into water, the volume is reduced by about 10%, and water is at +4°C. But with heat shrink