Atomic Theory Crossword

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Across
  1. 6. JohnDalton
  2. 7. Subscript is atomic number and mass# is superscript
  3. 8. Law of definite proportions
  4. 10. Founded the law of conservation of matters
  5. 16. where the electrons are found
  6. 17. Positive charge located in the nucleus
  7. 18. A negative ion
  8. 19. A relative atomic mass system that compares all other atoms to a standard atom
  9. 20. The standard comparison for atoms
  10. 21. A positive ion
Down
  1. 1. The element name followed by the mass number
  2. 2. Model of an atom
  3. 3. discovered the atomic nucleus
  4. 4. the percentage amount of all naturally occurring isotopes of an element
  5. 5. A charged atom
  6. 9. Number of protons and neutrons in a nucleus
  7. 11. Neutral charge and located in the nucleus
  8. 12. one of two species of atoms of a chemical element with the same atomic number and position in the periodic table
  9. 13. hypothesis that electrons have a dual wave particle nature
  10. 14. Negative charge Located outside the nucleus
  11. 15. AAM