Matter

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Across
  1. 3. electrons on the outer shell
  2. 4. electricly charged particles
  3. 6. definite shape and definite volume
  4. 8. measures the weight of an atom
  5. 10. positively charged atoms in the nucleus
  6. 11. smallest part of existing element
  7. 12. horizontally sorted in the periodic table
  8. 14. gas to liquid
  9. 16. anything that takes up space and has a mass
  10. 17. no definite shape but definite volume
  11. 18. liquid to solid
Down
  1. 1. negatively charged atoms
  2. 2. vertically sorted on the periodic table
  3. 5. also known as the protons and electrons
  4. 7. no definite shape or volume
  5. 9. solid to liquid
  6. 10. sorts the elements
  7. 13. liquid to gas
  8. 15. Cannot be broken down