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