science review crossword puzzle

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Across
  1. 2. how able it is to hammer it into a sheet
  2. 4. negative ion
  3. 8. there on the periodic table
  4. 12. two or more substances are visible
  5. 16. positive ion
  6. 17. means unstable
  7. 18. particles are very close together
  8. 19. numbers, measuring, fixed value
  9. 22. the rings that surround the nucleus
  10. 26. non metals that do not react
  11. 27. from liquid to solid
  12. 28. a solid that forms between two liquids
  13. 29. the amount of space an object takes up
  14. 30. solid, shiny, good conductor
Down
  1. 1. feeling, seeing, smelling
  2. 3. smallest particle of an element
  3. 5. flammable may ignite if exposed
  4. 6. from gas to solid state
  5. 7. the last energy level in an atom
  6. 9. a subatomic particle that is negative
  7. 10. the guy who organized the periodic table
  8. 11. reacts with oxygen
  9. 13. ability to stay unchanged
  10. 14. from solid to liquid
  11. 15. state of matter with least attraction
  12. 20. the most reactive metal group
  13. 21. a subatomic particle that is positive
  14. 23. mass/volume =
  15. 24. how easy it is to bend
  16. 25. a subatomic particle that is neutral