Across
- 2. group seventeen
- 5. ability to lose electrons
- 7. able to be flattened
- 10. the energy needed to remove an electron
- 11. outermost electrons
- 12. properties of both metals and nonmetals
- 14. group one
- 15. group eighteen
- 16. attraction of an atom to its electrons
- 18. able to be pulled in a wire
Down
- 1. group two
- 3. horizontal row
- 4. what forms when an atom loses electrons
- 6. changes with gaining or losing electrons
- 7. ordered the periodic table by atomic mass
- 8. dull, brittle
- 9. ordered the periodic table by atomic number
- 12. shiny and flexible
- 13. vertical column
- 14. what forms when an atom gains electrons
- 17. half the distance between identical atoms bonded together