Across
- 4. Representation of a molecule using symbols and numbers
- 9. Compounds that usually do not contain carbon
- 10. Small particles that make up all substances
- 11. Compounds that contain only carbon and hydrogen
- 12. The organic compound synthesized by Wohler
- 14. Carbon can form long structures of these
- 15. Substances made of only one type of atom
- 16. Groups of atoms joined together
- 18. The arrangement of atoms in a molecule
- 19. The organic compound synthesized by Wohler
Down
- 1. Scientist who synthesized urea in the laboratory
- 2. Theory that said organic compounds could only come from living organisms
- 3. The key element in organic chemistry
- 5. Carbon atoms are held together by these
- 6. Type of bond formed between carbon atoms
- 7. Carbon can form long structures of these
- 8. Compounds that contain carbon
- 13. Scientist who proposed that carbon forms chains
- 14. Substance formed when atoms are chemically bonded
- 17. Organic compounds were believed to come only from these organisms
