Periodic Table

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Across
  1. 2. Known for arranging the periodic table
  2. 4. Every element has a different _______ number
  3. 6. Nonmetals typically form ______ ions
  4. 9. Group 2 metals
  5. 10. Metals typically form _______ ions
  6. 11. Group found in between metals and nonmetals
  7. 12. Number that is also the atomic number of an atom
  8. 13. Total of protons and electrons
  9. 15. The number of groups on the periodic table
  10. 17. gas Colorless, oder-less gasses with low chemical reactivity
  11. 19. Atomic mass of 35.435
Down
  1. 1. Used to describe objects that conduct electricity well
  2. 3. Outer shell electrons
  3. 5. The vertical columns are called either families or_____
  4. 7. Group 1 metals
  5. 8. basic unit of a chemical element. The building blocks of life
  6. 14. A substance that cannot be broken into other substances
  7. 16. Particle with no charge
  8. 18. 9 on the periodic table
  9. 20. Most active nonmetals