Chemisty Crossing Crossword

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Across
  1. 2. GASES Element family with full outer shells
  2. 6. Vertical column in periodic table
  3. 7. Measure of matter in object
  4. 9. Charge an atom obtains by losing/gaining electrons
  5. 12. Simplest particle retaining chemical properties
  6. 13. Electrically neutral particle
  7. 15. Horizontal row in the periodic table
  8. 16. NUMBER Number of particles in a mole
  9. 18. Ability to attract bonding electrons
  10. 19. BONDING Bond between metal and nonmetal
  11. 20. Smallest part of an element
  12. 22. Atomic number equals number of these
Down
  1. 1. Elements that conduct heat and electricity
  2. 3. Substance made of two or more elements
  3. 4. Element with 11 protons
  4. 5. Group 17 elements
  5. 8. RADIUS Distance from nucleus to valence shell
  6. 10. BOND Bond where electrons are shared unequally
  7. 11. Type of matter with uniform composition
  8. 14. TABLE Table that classifies chemical elements
  9. 17. Cloud-like region where electrons are found
  10. 18. Attraction between ions of opposite charge
  11. 21. Formed when electrons are transferred