Across
- 3. When an atom gives an electron to another atom making opposites attract
- 4. H2O
- 6. what this is all part of
- 7. An ion that is negatively charged
- 9. when two atoms combine in a reaction
Down
- 1. What is made when two atoms bond
- 2. An ion that is positively charged
- 5. When two atoms combine
- 6. When two atoms share electrons to fill up their outer shells
- 8. A particle that contains protons, neutrons, and electrons