Science

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Across
  1. 2. water
  2. 7. 2 or more atoms held together by chemical bonds.
  3. 8. compounds contain...
  4. 9. contain millions or billions of atoms.
  5. 10. made up of protons neutrons and electrons.
  6. 11. 3/3 separating methods.
  7. 13. a mixture that is well mixed and difficult to separate.
  8. 14. sodium chloride
  9. 15. the fifth element in the periodic table.
Down
  1. 1. 2/3 separating methods.
  2. 2. doesn’t count as a molecule.
  3. 3. 2 or more substances not chemically combined.
  4. 4. hundred, around the amount of elements in the periodic table.
  5. 5. 2 or more different elements.
  6. 6. 1/3 separating methods.
  7. 12. horizontal rows in the periodic table.