Across
- 2. structure of an atom
- 3. positive charge
- 4. location on periodic table
- 5. science with properties
- 7. smallest part of an object
- 9. outer shell of an atom
- 11. element expressed in a unit
- 13. non-reflective surface
- 14. left side of periodic table
- 16. negative charge
- 17. where elements are listed
- 18. right side of periodic table
Down
- 1. letters representing atom
- 2. name of atom
- 6. zero charge
- 8. staircase of periodic table
- 10. simplest unit of element
- 12. important part of an object
- 15. reflective surface