Across
- 3. charge of an atom with more electrons than pro
- 5. up and down rows on the periodic table
- 6. side to side rows on the periodic table
- 7. how many electrons are in level 6
- 9. parts of an atom with a positive charge
Down
- 1. highly reactive metals that go boom
- 2. charge when there is more protons than elect
- 3. parts of an atom with a neutral charge
- 4. how many electrons are in level 2
- 8. how many electrons are in level 1