Matter and Anti matter definitions

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Across
  1. 3. A type of decay that results in a helium nucleus being emitted
  2. 4. A subatomic particle group containing quarks
  3. 6. A type of decay that changes an up quark to a down quark
  4. 9. Where an electron is absorbed by the nucleus and a proton changes to a neutron
  5. 11. The exchange particle of the strong nuclear force
  6. 12. A type of decay where a down quark changes to an up quark
  7. 14. Composed of quark composition udd
  8. 17. Quantity measured in (C/kg)
  9. 20. A hadron composed of a quark and anti quark pair
  10. 21. Type of diagram used to represent particle interactions
  11. 22. Antiparticle of an electron
Down
  1. 1. Property conserved only in the strong interaction
  2. 2. An element prone to emitting high energy particles
  3. 5. The exchange particle of the electromagnetic force
  4. 7. The most stable baryon
  5. 8. A fundamental particle not composed of quarks
  6. 10. Notated by letter Z and represents proton number
  7. 13. A subatomic particle with same mass but opposite charge of a given particle
  8. 15. Most stable lepton
  9. 16. Total of protons and neutrons
  10. 18. The exchange particle of the weak nuclear force
  11. 19. A neutral subatomic particle with a very small mass