Matter - Substance or entities that have mass and occupy space. From your Book to ball, earth to your Body, your smartphone, Food etc. If we Consider our House that is Made By many Tiny (sand material) bricks, Matter also formed by many tiny-tiny Particles (electron, proton, etc.) additives. The particle concept - (particle like electron, proton, neutron etc.) The bulk behavior of matter is the result of particle interactions via various atomic forces and quantum interactions. First and foremost, things that occupy space have their own existence, identity (atom, molecule, electron, compound), and behavior (quantum behavior). Following their own identity, they create different permutations and combinations with each other, resulting in different materials with different properties (bulk behavior). Particles interact with different forces of varying magnitudes, resulting in bulk behavioral differences, different states and different physical-chemical properties. States of matter ...