Across
- 2. The electrons found in the outermost level of an atom
- 7. A negatively charged atomic particle
- 9. Elements that conduct heat and electricity well
- 10. This model is an electron cloud
- 12. The horizontal columns on the periodic table
- 14. Smallest particle of matter
- 16. A bond formed by atoms sharing electrons
Down
- 1. This model first showed the electrons
- 3. A positively charged atomic particle
- 4. A force that brings oppositely charged atoms together
- 5. This model showed the nucleus and electrons only
- 6. A group of atoms bonded together
- 8. Conduct heat and electricity poorly
- 11. Made up of one or more of the same kind of atoms
- 13. The verticle column on the periodic table
- 15. Forms when an Atoms gains or loses an Electron