Across
- 3. Positively charged atom
- 5. A set of chemical symbols showing the elements present in a compound and their relative proportions
- 8. Two atoms coming together, merging electrons to fill the outer shell
- 10. Electron in the outermost shell of an atom
Down
- 1. Changes somethings identity completely
- 2. An atom giving electrons to another atoms to make themselves opposites and then attracting
- 4. negatively charged atoms
- 6. Groups of atoms held together with chemical bonds
- 7. The links between atoms in a substance that determine its identity
- 9. The main building blocks of everything