Most matter is empty space

Consider this: an atom is composed of a shell of electrons which orbit at a radius to a nucleus made of neutrons and protons. The electron is very small ( ~ 2 x 10^-15 m ) and the nucleus is also a very small object: ( ~1.75 x 10^-15 m ). Classically, the radius of the atom is 10000 times the radius of the nucleus. The distance between the electrons and nucleus is empty space. This means that nearly all the volume associated with an atom is actually empty space.