Across
- 4. thermal dissociation of molecules
- 7. estimates the quality of gasoline
- 10. separation due to different boiling points
- 11. reaction with oxygen
- 12. conversion of chemical substances
Down
- 1. liquid to dilute a substance
- 2. you need it for living
- 3. has a pH below 7
- 5. hydrocarbons with oxygen bridge
- 6. without it your car does not drive
- 8. reduces activation energy
- 9. inclusion of a substance on the surface of a solid