Across
- 4. An allotrope of carbon
- 8. Property of metals
- 10. Atomic number 29
- 11. Number of Protons in the atom
- 14. Has positive and negative feelings
- 16. Feels a little negative
- 18. Colour of sodium Flame
- 19. The middle of the periodic table
Down
- 1. Where electrons exist
- 2. A cryptic noble gas
- 3. A bit unsure of identity on the right of the table
- 5. A positive part of the nucleus
- 6. Non-metals can exist as these
- 7. Colour of copper ions in solution
- 9. A powerful process in extracting metals
- 12. A chargless sub atomic particle
- 13. Electrons in outer shell
- 15. Atomic number 12
- 17. First Alkali Metal
- 20. Central part of an atom