Elements, Compounds and Mixtures

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Across
  1. 2. Side of the periodic table where nonmetals are found
  2. 4. Number of hydrogen atoms in a molecule of water
  3. 6. Smallest particle of a compound
  4. 8. Toxic green gas, symbol Cl
  5. 11. A pure substance that cannot be broken down or simplified by chemical or physical means
  6. 12. Dull, brittle, insulating elements
  7. 13. A pure substance, made of at least two chemically combined elements, can be broken down chemically
  8. 15. Compounds have completely different _________than the elements that make them up.
  9. 18. Two or more elements or compounds physically combined
  10. 19. Elements that touch the "staircase" on the Periodic Table
Down
  1. 1. H2O2 (two words, no space)
  2. 3. NaCl (two words, no space)
  3. 5. H2O
  4. 6. Shiny, malleable, ductile elements
  5. 7. Side of the periodic table where metals are found
  6. 9. Smallest particle of an element
  7. 10. CO2(two words, no space)
  8. 14. Number of oxygen atoms in a molecule of water
  9. 16. The chart that shows all the elements in repeating patterns (2 words, no space)
  10. 17. Explosive silvery metal, symbol Na