Across
- 3. Bonds that are created by valence electrons
- 5. 3 protons
- 7. a pair of electrons shared by 2 atoms
- 8. the name of the element
- 12. the electrical attraction between a negative ion and a positive ion
- 14. the unequal sharing of electrons between atoms that gives rise to negative and positive regions of electrical charge
- 15. average amount of protons/neutrons
Down
- 1. 12 protons
- 2. the abbreviated letter/s of the element
- 4. the electrons involved in chemical bonds with other elements
- 6. 1 electron
- 9. 7 protons
- 10. chemicals that are made of only carbon and hydrogen
- 11. the amount of protons and electrons
- 13. 2 neutrons