Across
- 3. The best literature on studying of chemistry
- 5. it is a molecule with different charges on the ends
- 6. structure of the strongest mineral
- 7. the lightest metal
- 8. Class of the chemical compounds used for production of an anesthesia
- 9. Madiar Sh. calls this group of elements men
- 10. first element of periodic system of elements
Down
- 1. molecule with a high molecular weight
- 2. science about substances, their structure, their properties
- 4. Hydrocarbons the containing only simple bonds also have a formula CnH2n+2