| Abbreviation | Definition |
|---|---|
| CHA | Chemical Hamiltonian Approach |
| CHAMPS | Chemistry Honours And Miscellaneous Postgraduate Students |
| CHANGE | Chemical Health And New Growth Experiences |
| CHC | Chlorinated Hydrocarbon |
| CHE | Chemical Engineering |
| ChEBI | Chemical Entities of Biological Interest |
| CHEMICAL | Chemistry |
| CHEMRAT | Chemical Hazard Estimation Method And Risk Assessment Tool |
| CHESS | Chemical Shift Selective Imaging Sequence |
| CHF | Chemical |
| CHF3 | Trifluoromethane (R23) (not an acronym) |
| CHG | chlorhexidine gluconate |
| CHGB | Chromogranin B |
| CHI | Cationic Hydration Interlink |
| CHIP | Chemical Hazard Information and Packaging |
| CHM | Chemistry |
| CHMC | Commission on the History of Modern Chemistry |
| CHMICA | Chemical |
| CHN | Carbon, Hydrogen, and Nitrogen |
| CHNOPS | Carbon Hydrogen Nitrogen Oxygen Phosporus Sulfer |