Diego Ortiz - Periodic Table Crossword

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Across
  1. 3. Weighted average of all of the different versions of an element
  2. 7. tells what elements and how many of each element are in a unit of that compound
  3. 10. Tells the number of p+ in an atom of the element
  4. 11. Name of element – mass #
  5. 13. Abbreviation for the name of the element
  6. 14. any of the seven elements that make up group 18 on the periodic table
  7. 16. when atoms transfer electrons in order tobe stable
  8. 17. One element replaces a similar element in a compound
  9. 18. atoms of the same element with different numbers of neutrons
  10. 20. two or more elements chemically combined
  11. 23. the charge on an ion
  12. 24. negatively charged ion formed from gaining e-
  13. 25. a positively or negatively charged, covalently bonded group of atoms
  14. 27. When something is burned
  15. 28. atoms will gain, lose, or share electrons inorder to have 8 electrons in their outer shell
Down
  1. 1. The center of an atom
  2. 2. Mass #Symbol
  3. 4. Two ionic compound reactants switch ions, forming two new ionic compound products
  4. 5. 2 or more reactants combine to make 1 product
  5. 6. an insoluble compound that comes out of the solution
  6. 8. force that holds atoms together in a compound
  7. 9. Smallest unit of an element
  8. 12. positively charged ion formed from losing e-
  9. 15. When 1 reactant breaks down into 2 or more products
  10. 19. charged atom that has gained or lost electrons
  11. 21. reaction that makes oxygen as a byproduct
  12. 22. non-reactive and balanced
  13. 26. Tells the number of protons and neutrons in the nucleus of an atom