Elements and Compounds

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Across
  1. 2. there are more than ___ naturally occurring elements.
  2. 6. the relationship of part to another or to the whole
  3. 8. a dark solid that forms a purple gas
  4. 10. elements are arranged in _____ on the period table
  5. 11. seventy-five of the universe is made up of _____.
  6. 14. organizes elements in a table
  7. 15. the total weight of a compound
  8. 16. the branch of science that deals with mixing chemicals
Down
  1. 1. the ratio of the mass to the total mass of the compound
  2. 3. the separation of compounds such as H20
  3. 4. when two or more elements combine
  4. 5. a silver metal that fizzes & burns in water
  5. 7. a compound with a 2:1 _______.
  6. 9. this type of carbon is what we breathe
  7. 12. elements & compounds are being discovered every _____.
  8. 13. a pure substance