无论任何种物质,全是由各该种物质的分子集合而成的。这种结论,早已由各位科学家们,利用各种方法,证明是千真万确的。不仅分子确实存在,而且它还时刻不停的在运动中。就三种状态的物质而言;(1)固态物质的分子、相互间的距离很近,因之相互吸引的作用力就大,于是分子或离子分别各自运动时,相互控制的作用就大,结果只可在不改变相互位置的情况下,作扭转运动或作振动运动,也有的可能作扭转与振动并行的运动。这样的结果,外部形态不变,固体物质之所以有固定的形状,也就是这个原因,(2)液态物质的分子或离子,相互间的距离,较固态物质分子间的距离就远些,因之相互的吸引力就较小些,也就是液态物质的分子或离子各自分别运动时,所受的限制小一些,换句话说,就是分子各自的自由性大一些,于是作随时改变位置的运动,也就是液态物质,没有固定形状的原因。(5)气态物质的分子,相互间的距离很大,有的可能大于它们 No matter what kind of material, all from the various kinds of material molecules made of. This conclusion has long been proven by scientists, using various methods, to be true. Not only does the molecule really exist, but it is also constantly in motion. In the case of three states of matter: (1) molecules of solid matter are so close to each other that they attract each other with a large force, so that when the molecules or ions respectively move, the mutual control effect is great, The result can only be twisted or vibrated without changing the position of each other, while others may be used to reverse the parallel movement of vibrations. This result, the external shape unchanged, the reason why the solid material has a fixed shape, which is the reason, (2) the liquid molecules or ions, the distance between the solid molecules than the distance between the molecules on the far, The attraction of each other is smaller, that is, the molecules or ions of liquid substances, respectively, when the respective movement of the smaller restrictions imposed, in other words, is the freedom of their respective larger, so as to change the position of the movement , That is, liquid material, there is no fixed shape reasons. (5) Molecules of gaseous substances are quite distant from each other and may be larger than them