Across
- 2. Last name of the "father" of the periodic table
- 4. Gases that are inert (don't react)
- 6. these elements are good conductors of electricity
- 8. can act like metals or non-metals
- 9. part of the atom where the protons and neutrons live
- 10. metals become ions with a +2 charge
- 11. subatomic particle with a positive charge
- 12. energy needed to take away a valance electron
Down
- 1. subatomic particle with a neutral charge
- 3. need one more electron to have a full valance shell
- 5. ability to attract an electron to make a bond
- 7. subatomic particle with a negative charge