Problems with fundamental particles and quarks :( Hi, I have no idea where to post this so I hope its ok... I'm studying A level physics. We have a topic on fundamental particles. Yea couple of questions... 1. Whats the difference between a (insert lepton here)-neutrino, and its antiparticle, or any particle that has no charge and its antiparticle I know they have negative lepton/baryon numbers, but in reality what effect does that have...? (also the difference between the pion pi0 and its antiparticle...?) 2. How does one determint the quark composition of... say a proton. its supposed to be up up down. why could it not be top top bottom, or charm charm strange, when all these have the same baryon number and charge respectively... 3. How is a "fundamental particle" fundamental if its made up of quarks 4. I don't get what generations mean either... Sorry about noobish questions but im totally confused :s Thanks, Owen.