Q: Is the matter infinitely divisible A: At 2023 answer is unknown but the progress is remarkable Powers of Ten
9.1 The natural world
Chemistry and atoms
Electron (0.511) Photon (0) Proton (938.3) Neutron (939.6) Positron(0.511) Neutrino(?) Muon(106) Pions(140) Kaons(500) Eta (550) Lambda (1115) Sigma (1190) Delta (1230) Ksi(1320) Omega(1672) .... and many more
9.2 Intrinsic properties of the elementary particles or invariants:
Point-like objects
Mass No pattern Huge range
Spin 0 +1/2 +1
Electric charge: -1 -2/3 -1 0 1/3 2/3 1
Color: red green blue anti-red anti-green anti-blue ; no color
Weak charge
9.3 Fundamental matter particles have spin=1/2 aka fermions:
Lepton family - no color: Masses Charge Lifetime Generations Lepton numbers Anti leptons
Quark family - have color: Flavor Charge Masses Generations Anti quarks