Chemistry

12345678910111213
Across
  1. 3. Pure substance that only contains one type of atom
  2. 5. Mass of an atom
  3. 7. Pure substance
  4. 8. Smallest part of an element
  5. 10. Impure combinations of elements
  6. 12. Negative_Charge
Down
  1. 1. Smallest part of a compound
  2. 2. Impure, not consistent substance
  3. 4. Number of protons and neutrons in an atom
  4. 6. Number of protons in an atom
  5. 9. Positive_Charge
  6. 11. No/Neutral_Charge
  7. 13. Two or more elements that are chemically combined