Across
- 2. King of acids
- 4. simplest repeating structure of a crystal
- 6. Study of Matter
- 8. month of Avogadro Number
- 9. Lightest element
Down
- 1. 17th group elements
- 3. Laughing gas
- 5. rows on the periodic table
- 7. Polymer of isoprene
- 8. one of the chalcogens