Across
- 3. made with different atoms when chemically bonded
- 5. the electrons on the outer most energy shell
- 8. when atoms share a valence electron
- 10. the most basic building blocks for all matter
Down
- 1. when atoms transfer valence electron
- 2. the bond that forms molecules
- 4. atoms need 8 valence electrons to be stable
- 6. a certain type of atom
- 7. groups of atoms
- 9. the opposites attract each other like magnets