Answer:
density
Explanation:
There are, mainly, three states of matter (solid, liquid and gas). These can be defined differently from the other according to their physical properties. In order to do this, scientists use the word "density" to compare their properties.
Solid has a higher density compared to liquid and gas. This is because its particles are tightly packed. Liquid has a lower density when compared to solid because its particles are loosely arranged. Gas has the lowest density among the three. This means that the gas particles have a very big space, thus rising to a higher kinetic energy.
Thus, this explains the answer.
