Elements and Atoms

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Across
  1. 2. color of mercury
  2. 9. element that needed to breathing
  3. 10. the property of group I and II in periodic table
  4. 13. smallest part of matter
  5. 14. red-brown liquid
  6. 17. discoverer of Yttrium
  7. 18. element that has atomic number 10
  8. 19. element that sign in purple color (look at the periodic table in your book)
  9. 20. the first element that discovered
Down
  1. 1. an element in noble gas
  2. 3. element that gives red spark in firework
  3. 4. a substance that cannot be broken down into simpler components by any non-nuclear chemical reaction
  4. 5. the color of boron
  5. 6. substances that made from two or more elements that are joined together
  6. 7. symbol of magnesium
  7. 8. element that discovered in 1868
  8. 11. the first chemist
  9. 12. symbol of tin
  10. 15. element that is used in compound to makes sparks
  11. 16. one of the elements that found in the sun