Vocab Project

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Across
  1. 2. a positively charged subatomic particle that is found in the nucleus of an atom
  2. 3. an ion with a positive charge
  3. 5. elements that are good conductors of heat and electricity
  4. 7. a substance that cannot be broken down into simpler substances
  5. 9. an electron that is in the highest occupied energy level of an atom
  6. 14. a negitively charged subatomic particle that is found in the space outside the nuclues of an atom
  7. 16. the dense positively charged mass located in the center of an atom
Down
  1. 1. an arrangment of elements in columns based on a set of properties that repeat from row to row
  2. 4. the smallest particle of an element
  3. 5. elements with properties that fall between those of metals and nonmetals
  4. 6. the pattern of repeating properties displayed by elements in the periodic table
  5. 8. elements that are poor conductors of heat and electricity
  6. 10. a unique number for each element that equals the number of protons in an atom of that element
  7. 11. the elements in group 8A of the periodic table
  8. 12. a nuetral subatomic particle that is found in the nuclues of an atom
  9. 13. atoms of a given element that have different numbers of nuetrons and different mass numbers
  10. 15. an ion with a negitive charge