Jacob's Chemistry Crossword Fun

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Across
  1. 2. there are 18 of these in the periodic table
  2. 3. process by which an atom or a molecule acquires a negative or positive charge
  3. 6. An electron of an atom, located in the outermost shell of a atom
  4. 8. The 38 elements in groups 3 through 12 of the periodic table
  5. 10. there are 7 of these in the periodic table
  6. 11. Any of the electronegative elements
  7. 14. number of protons
  8. 15. Any of the group of bivalent metals
  9. 19. protons plus neutrons
  10. 20. Negatively charged particle
Down
  1. 1. an element that is not a metal
  2. 4. Any of the chemically inert gaseous elements
  3. 5. measure of the tendency of an atom to attract a bonding pair of electrons
  4. 7. The series of rare-earth elements of atomic numbers 57 through 71
  5. 9. size of a atom
  6. 12. Any of the group of univalent metals
  7. 13. boron, silicon, germanium, polonium, and antimony are some examples of these
  8. 16. Mass greater than a proton
  9. 17. Positively charged particle
  10. 18. The series of radioactive elements that starts with actinium and ends with lawrencium