all atoms are very small some might even call it microscopic. All of matter is made up of atoms the earth is created by atoms. The items that make up an atom is nucleus, inside the nucleus there is protein  and neutrons, outside an atom there is electrons. It must have at least one protons to make a atom, the pull of the atoms are very strong. Atoms are smaller then the smallest DNA. There are atoms every like the air. When the atoms connect they become solid.