27 Combinations in the Chemical Substances category:
| 1. Alcohol |
| 2. Amino Acids |
| 3. Benzine |
| 4. Chemical Rubbish |
| 5. Chemical Waste |
| 6. Chloroform |
| 7. Dry Ice |
| 8. Gun Powder |
| 9. HCL |
| 10. HNO2 |
| 11. HNO3 |
| 12. Hydrocarbon |
| 13. Hydrochloric Acid |
| 14. Lead Oxide |
| 15. Liquid Oxygen |
| 16. Nitric Acid |
| 17. Nitrous Acid |
| 18. NO2 |
| 19. Nuclear Waste |
| 20. Potassium Nitrate |
| 21. Soda |
| 22. Sodium Hydroxide |
| 23. Sodium Hydroxide Solution |
| 24. Sulfur Dioxide |
| 25. Sulfur Trioxide |
| 26. Sulfuric Acid |
| 27. Vinegar |