Periodic Table Vocabulary

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Across
  1. 2. The smallest particle that has the properties of an element.
  2. 5. Another name for groups.
  3. 6. Vertical columns of the periodic table.
  4. 8. The letter(s) for an atom.
  5. 10. How easy an element can react with another.
  6. 12. Shiny and reflectiveness of an element.
  7. 13. An electron in the outermost shell of an atom.
  8. 15. The way to measure an electron's mass, it's mass is .008
  9. 16. The mass for an atom.
  10. 17. The subatomic particle with a negative charge
  11. 19. The group that most of the elements on the periodic table are in, usually solid.
  12. 20. The subatomic particle with a positive charge
Down
  1. 1. Horizontal rows
  2. 3. The outside of a nucleus, where electrons are found.
  3. 4. The group of elements that are usually gas.
  4. 7. The subatomic particle with no charge
  5. 9. The gasses that don't usually combine with other elements.
  6. 11. The group of elements that have both properties of a metal and nonmetals.
  7. 14. The number for an atom, equals electrons and protons.
  8. 18. The circle housing the protons and the neutrons