Atom vocab

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Across
  1. 3. group 17 of the periodic table
  2. 6. positive charged subatomic particle
  3. 10. the number of protons in an atom (identifies the element)
  4. 13. brittle poor conductor of electricity
  5. 14. the total mass of an atom (protons + neutrons)
  6. 15. have full outer shells, stable, not likely to react
Down
  1. 1. horizontal rows of the periodic table
  2. 2. neutral subatomic particle found in the nucleus
  3. 4. a positive, or negative charged particle of group of atoms
  4. 5. negative subatomic particle plays a key role electrical current
  5. 6. arrangement of chemical elements in order of atomic number
  6. 7. visual representation of bonds between atoms
  7. 8. malleable (bendable) good conductors of electricity and or heat
  8. 9. vertical columns of the periodic table
  9. 11. elements that have a different number of neutrons than protons
  10. 12. building block of all matter