It depends on what you mean by "parts." Everything that takes up space, everything that has mass, is matter. Therefore, basically everything is a part of it. Matter is made up of molecules, which are themselves made up of atoms, which are made of protons, neutrons and electrons. The various kinds of atoms are called elements.

And matter can take four basic forms: solid, liquid, gas, and plasma. Different materials take on different forms at standard temperature and pressure, depending on their molecular make-up.