Reframe: Liquids have a molecular arrangement less dense than that of solids. The liquid molecules are not stuck to each other like those of the solids. So my question is what lies in these spaces between two molecules which allows the liquid to look continuous and not something with regular spaces(like a sponge has holes).
closed as unclear what you're asking by garyp, ACuriousMind♦, Gert, Danu, user36790 Apr 11 '16 at 9:26
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Interaction between neutral atoms/molecules is described by such a potential that the force is that of repulsion at smaller distances and that of attraction at greater distances. The repulsion is Pauli repulsion, so it is (parts of) electronic orbitals that are between atoms/molecules. With higher temperature, the oscillatory energy is higher, and the atoms are "higher" in the potential well, that typically means that the mean distance is greater (but water is one of the exceptions, and liquid water is denser than ice).