cop

1234567891011121314151617181920
Across
  1. 1. beta particle
  2. 3. gamma ray
  3. 6. mass number
  4. 8. ion
  5. 12. alpha particle
  6. 13. cation
  7. 16. beta radiation
  8. 18. anion
  9. 19. isotope
  10. 20. hydrate
Down
  1. 2. ppm
  2. 4. anhydrate
  3. 5. Atomic Mass Unit
  4. 7. nuclear equation
  5. 9. neutron
  6. 10. pc
  7. 11. alpha radiation
  8. 14. nucleus
  9. 15. proton
  10. 17. molar masss