Chemistry

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Across
  1. 3. negatively charged ion
  2. 5. a minute portion of matter.
  3. 6. positively charged ion,
  4. 7. penetrating form of electromagnetic radiation transmission of energy in the form of waves
  5. 9. any substance composed of molecules
  6. 11. everything around you is made up of .
  7. 12. the action of dividing or splitting something
  8. 13. the central and most important part
  9. 16. alpha
  10. 18. mass of an atom of a chemical element
  11. 19. result of joining two or more things together
  12. 20. same # of protons but not neutrons
  13. 21. uppercase/lowercase Β β
Down
  1. 1. molecular ion is a covalently bonded
  2. 2. atom or molecule with a net electriccharge
  3. 4. without an electric charge same weightas
  4. 8. consist of a nucleus made of protons and neutron
  5. 10. positive electric charge
  6. 14. negative charge
  7. 15. total number of protons and neutrons
  8. 17. # of protons in the nucleus of an atom