Across
- 3. electron on the outer most shell of a atom.
- 4. branch of science where you study this.
- 6. 2 oxygen atoms in a ionic compound.
- 9. Two or more elements.
- 10. Ionic or covalent _______.
Down
- 1. Metal + Nonmetal.
- 2. Dihydrogen oxide.
- 5. 3 oxygen atoms in a covalent compound.
- 7. solve the chemical _____________.
- 8. Nonmetal + Nonmetal.