Chemistry

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Across
  1. 1. water's is H2O
  2. 2. pure substances that cannot be broken down
  3. 4. decimal number below element name
  4. 6. number in top left of elements; 1-118
  5. 7. all of the "stuff" in the universe; anything with mass and volume
  6. 9. represents the name of the element
Down
  1. 1. the scientific field dealing with elements, substances, and compounds
  2. 3. atoms combine to form these
  3. 5. substances combine to form these
  4. 8. the basic building blocks of matter