Chemistry crossword

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Across
  1. 5. Metals and non metals
  2. 8. New substance with new properties
  3. 11. Number of Atoms
  4. 14. Changes appearance
  5. 15. Electricity and heat passes through
  6. 16. A new solid is formed
  7. 17. Smallest part of an element
  8. 18. Steaming or bubbling
  9. 19. Has three energy levels
Down
  1. 1. Can be pulled into a wire
  2. 2. Electricity and heat does not pass through
  3. 3. Goes from left to right
  4. 4. Center of the atom
  5. 6. Matter cannot be created nor destroyed
  6. 7. In nucleus with neutral charge
  7. 9. Spark or emit a glow
  8. 10. Shatters easily
  9. 12. Bent or hammered
  10. 13. Shiny
  11. 14. In nucleus with positive charge