Chem puzzle

12345678910111213141516171819
Across
  1. 2. same mass as a proton
  2. 3. charge of negative electricity
  3. 7. mass,letters,# of neutrons
  4. 8. a stable subatomic particle occurring
  5. 10. big dot
  6. 11. fire
  7. 12. Jimmy Neutron
  8. 14. a particle representing a quantum
  9. 15. each of the actual
  10. 17. a beam of electrons
  11. 18. lighting something
  12. 19. Electron cloud
Down
  1. 1. the removal of moisture
  2. 4. the number of protons in the nucleus
  3. 5. small dot
  4. 6. total number of protons and neutrons
  5. 9. lost electrons and gained electrons
  6. 10. isotopes can be differentsizes&masses
  7. 13. Solar system
  8. 16. Chocolate chip cookie