Can you guess this note? Perfect Pitch and Physics

What makes particles charged?
I mean, if one particle has a positive charge and one has a negative charge, they attract, but why?
What makes an electron negative and what makes a proton positive, and why?  Why would a particle in one place be attracted to a particle in another place simply because it has an opposing charge?  Where does the energy to move the particles come from?  This is doin me a major confuse