The standard model of physics is made of 16 particles - the leptons which are the electron, the muon, the tau, the electron neutrino, the muon neutrino, and the tau neutrino - the gauge bosons which are the photon, the gluon, the graviton, and the w and z particle (two different particles from a similar force) - and the quarks - the up quark, the down quark, the strange quark, the charmed quark, the top quark, and the bottom quark.
All of those particles are fundamental, meaning they only can be splitted into energy. Matter does not exist since it is only a form of energy, like a photon or gluon or whatever. What about mass and weight? The universe is shrouded in a higgs field. The higgs bosons (not included in the standard model) interact with some particles and do not interact with others. THe top quark should have a same intrinsic mass as a strange quark or whatever, but it interacts so strongly with the higgs field that it has the mass of a gold nucleus! wow. THe photon (carrier of electromagnetic force) does not interact with the higgs field at all, so it has no mass. BUt the W and Z particles, carriers of the weak force (force of radioactive decay) interact with the higgs field so strongly that they have to decay into an electron and an electron antineutrino, or a positron or a electron neutrino (depending on the particle type). Up and down quarks make up protons and neutrons which make up atoms which make up the universe, but THEY ARE ONLY PARTICLES OF ENERGY WHICH INTERACT WITH THE HIGGS FIELD TO PRODUCE MATTER LIKE PROPERTIES!
If you don't trust me search google, or wikipedia, or youtube.