Periodic Table By: Brittney Grimble

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12345678910111213141516171819
Across
  1. 2. The element's symbol is Br.
  2. 5. Very reactive nonmetals.
  3. 11. Metals Are less reactive than alkali metals are.
  4. 12. The oxygen group contains this amount of electrons in its outer level.
  5. 15. The atomic number is 18 and the atomic mass is 39.9.
  6. 16. Dull and poor conductors of heat and electricity
  7. 17. Makes up 80% of the air you breathe.
  8. 19. Each horizontal row of elements (from left to right) on the periodic table.
Down
  1. 1. Group Electrons in the outer level is 4.
  2. 3. Last name of Russian chemist who discovered a pattern to the elements
  3. 4. Compounds are found in cement, chalk, and even you.
  4. 6. Metals Are elements in Group 1 of the periodic table.
  5. 7. Last name of British scientist who determined the number of protons-the atomic-in an atom
  6. 8. Shiny and great conductors
  7. 9. Elements in the first row that follow lanthanum.
  8. 10. Can be shiny or dull and good or bad conductors
  9. 13. Group One metalloids and 5 metals
  10. 14. Law States that the repeating chemical and physical properties of elements change periodically with the elements' atomic numbers.
  11. 18. Each vertical column of elements (from top to bottom) on the periodic table.