Science

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Across
  1. 1. a good conductor
  2. 3. in the air we breathe
  3. 5. build up of atoms
  4. 8. a neutral charged atom
  5. 11. allows electricity to flow
  6. 12. planet with ring
  7. 13. Science teacher
  8. 14. positively charged atom
  9. 16. the study of life
  10. 18. composed of atoms
Down
  1. 2. negatively charged atom
  2. 4. rubbing a balloon on head
  3. 6. basic unit of a chemical element
  4. 7. firm and stable state
  5. 9. our planet
  6. 10. North Star
  7. 12. power from sun
  8. 14. a circuit with multiple paths
  9. 15. a circuit with one path
  10. 17. centre of solar system