Across
- 1. bonds share electrons
- 3. bond links between atoms
- 5. become positive charged ions
- 7. bonds transfer electrons
- 8. become negative charged ions
Down
- 1. reaction when bonds are built/broken and a new substance is created
- 2. electrons Most outer electrons on a ring of an atom
- 4. reaction of chemical bonds that causes heat
- 5. group of atoms bond together
- 6. protons, neutrons, electrons