atom and solar system crossword

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Across
  1. 1. positively charged substance.
  2. 3. natual settelite.
  3. 4. Most dense atmosphere.
  4. 6. second largeest planet.
  5. 8. smallest planet in the solar system.
  6. 10. dwarf planet.
  7. 11. 3rd closest planet from the sun.
  8. 13. largest planet.
  9. 14. substance that cant be broekn down simpler.
Down
  1. 2. dense center of an atom.
  2. 5. ice giant.
  3. 7. negatively charged substance.
  4. 8. "the red planet".
  5. 9. densest giant planet.
  6. 12. the smallest unit that contains chemical properties