Structure of An Atom

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Across
  1. 4. a neutral charge found inside the nucleus and mass is 1 amu
  2. 6. The weight of all isotopes in the element rounded according to the periodic table
  3. 9. The structure of the cell that has the protons and neutrons inside of it
  4. 14. the total number of protons and neutrons
  5. 15. The atomic number is 90 on the periodic table
  6. 16. Negative charge, surrounding the nucleus and mass is 1/800
  7. 17. the atomic number is 79 according to the periodic table
  8. 19. atoms with additional electrons or electrons missing
  9. 20. the number of protons and neutrons in an element according to the periodic table
Down
  1. 1. has an atomic number of 1 according to the periodic table
  2. 2. Positive or negative physical feature of particles or things that causes them to attract or repel one other without touching
  3. 3. The mass number as written in the periodic table is 75
  4. 5. The atomic mass as written on the periodic table is 15.999
  5. 7. atomic mass unit
  6. 8. atoms with an equal amount of protons and electrons but a different number of neutrons
  7. 10. all found on the periodic table and all have unique properties
  8. 11. positively charged particle found inside the nucleus and mass is 1 amu
  9. 12. are made up of neutrons, protons, and electrons
  10. 13. The mass number as written on the periodic table is 84
  11. 18. the atomic number is 30 according to the the periodic table