The answer is Space between particles and Kinetic Energy of Particles. Hope this helps!
Explanation:
In solids, particles are always held together due to strong intermolecular forces of attraction. As a result, particles are not able to move from their initial place.
Thus, they have low kinetic energy, less space between each molecule and very less or no speed of particles will be there.
In liquids, molecules are held less tightly as they do not have strong enough intermolecular forces. As a result, particles are able to move from their initial place.
Hence, in liquids molecules have some kinetic energy so, space is more between each particle and speed of particle motion will be more.
In gases, molecules are held by weak intermolecular forces due to which particles are far away from each other. Hence, they have more speed, kinetic energy and space between the particles is large.
Thus, we can conclude that the flowchart of the common states of matter as solids < liquid < gases shows that :
