Across
- 5. the table of the elements
- 8. a group of atoms
- 9. Smallest unit of measurement
- 11. also known as water.
Down
- 1. makes up everything
- 2. Chemically pure, cannot
- 3. Salt
- 4. salt water
- 6. carbon dioxide
- 7. negatively charged subatomic atom
- 10. not chemically pure