text: why up, down, charm, strenght deal with neutron, electron, protron? plz help me...                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       plz subatomic particles (protons, neutrons, electrons) are made of smaller building blocks called "quarks".  the names of these quark bulding blocks are "up", "down", "strength", "charm"  by the way, they all come in colors, too (blue, red and green)