8th Prop of Atoms & Molecules L 1-15 Vocab Crossword

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Across
  1. 2. refining ore through high temperature
  2. 3. molecules formed by sharing of electrons
  3. 4. positively charged particle (+) in the nucleus of an atom
  4. 8. number of protons in an atom
  5. 9. a measure of how strongly an element attracts electrons to itself
  6. 12. group of chemically connected atoms
  7. 14. tight mass of protons and neutrons in the center of an atom
  8. 15. recycling of carbon for reuse by plants and animals
  9. 18. elements on the periodic table between the metals and nonmetals
  10. 20. number of protons plus the number of neutrons in an atom
  11. 22. negatively charged particle orbiting the nucleus of an atom
  12. 23. substance that cannot be broken down by ordinary chemical means
  13. 25. a bond formed by transferring of electrons
  14. 27. row of the periodic table
  15. 28. two or more different kinds of atoms bonded together
Down
  1. 1. elements in the center columns of the periodic table, labeled with the letter B
  2. 5. adding of oxygen to a molecule
  3. 6. top four elements in column VIIA (17) on the periodic table
  4. 7. symbolic representation of the atoms in a molecule
  5. 10. outermost energy level (or shell) of an atom
  6. 11. column of the periodic table
  7. 13. non-reactive
  8. 16. removal of oxygen from a molecule
  9. 17. two of the same type of atom bonded together
  10. 18. bond formed when thousands of atoms freely share their electrons
  11. 19. an element with an electrical charge due to missing or extra electrons
  12. 21. separating of atoms by passing electrical current through them
  13. 24. electrically neutral (neither + nor - )in the nucleus of an atom
  14. 26. gases elements in column VIIA, (18) non-reactive elements