Across
- 2. Close together but unorganised.
- 4. is written as He on the periodic table.
- 5. Close together and organised.
- 7. Is the chemical combination of H20.
- 8. Not close together and not organised.
- 9. is written as O on the periodic table
Down
- 1. Is written as N on the periodic table.
- 3. Is written as Fe on the periodic table.
- 4. Is written as H on the periodic table.
- 6. Is written as C on the periodic table.