Periodic Table crossword
Across
- 2. center of an atom
- 6. staircase on the periodic table
- 8. removing electrons
- 9. a bond formed when two atoms share valence electrons
- 12. number of protons in nucules
- 16. located in the outer most energy level
- 19. makes up periodic table
- 20. found in the middle of the periodic table
Down
- 1. forming a bond between other elements
- 3. a vertical column
- 4. a horizontal row
- 5. Negative charge
- 7. Neatral charge
- 10. brittle an poor conducters
- 11. nonreactive elements
- 13. same number of protons and electrons in a atom
- 14. an atom that has gained or lost electrons
- 15. Positive charge
- 17. the smallest part of an element
- 18. number one on the periodic table