I've read something telling me that the volume of a matter is 0 cm³ at absolute zero.
From my knowlledge, I know that expansion and contraction is due to the change of distances between particles. That means the sizes of atoms remain constant when temperature changes. If the temperature is 0K, there are no spaces between atoms. while the sizes of atoms remain the same. Hence, why the volume of a matter is 0 cm³ at absolute zero?