| χ-parameter |
| cadium–helium laser |
| cage |
| cage compound |
| cage effect |
| Cahn–Ingold–Prelog system |
| calcination |
| calcined coke |
| calibration in analysis |
| calibration component |
| calibration curve |
| calibration function in analysis |
| calibration gas mixture in atmospheric chemistry |
| calibration material in analysis |
| calibration mixture in analysis |
| calibration sample in analysis |
| calixarenes |
| calorieunit |
| calorimetric titration |
| calorimetry |
| candelaunit |
| canonical form |
| canonical rate constant |
| canonical variational transition-state theory
(CVTST)
|
capacitance,  of a plate capacitorquantity |
| capacitance hygrometer |
| capillary column in chromatography |
| capillary condensation |
| captodative effect |
| capture |
| capture cross-section |
| capture γ-radiation |
| carbaboranes |
| carbamates |
| carbanion |
| carbena |
| carbenes |
| carbene analogues |
| carbene metal complexes |
| carbene radical anions |
| carbene radical cations |
| carbenium centre |
| carbenium ion |
| carbenoids |
| carbinolamines |
| carbinols |
| carbinyl cations |
| carbocation |
| carbocyclic compounds |
| carbodiimides |
| carbohydrates |
| carbon |
| carbon loading of the packing material in liquid chromatography |
| carbonaceous mesophase |
| carbon artifact |
| carbon black |
| carbon–carbon composite |
| carbon cenospheres |
| carbon cloth |
| carbon dioxide laser (CO2
laser) |
| carbon electrode |
| carbon felt |
| carbon fibre |
| carbon fibre fabrics |
| carbon fibres type HM
|
| carbon fibres type HT |
| carbon fibres type IM |
| carbon fibres type LM |
| carbon fibres type UHM |
| carbonitriles |
| carbonium ion |
| carbonization |
| carbon material |
| carbon mix |
| carbon whiskers |
| carbonyl compounds |
| carbonyl imides |
| carbonyl imines |
| carbonyl oxides |
| carbonyl ylides |
| carboranes |
| carboxamides |
| carboxamidines |
| carboxylic acids |
| carbylamines |
| carbynes |
| carbyne metal complexes |
| carbynium ions |
| carotenes |
| carotenoids |
| carrier |
| carrier protein |
| carrier in radioanalytical chemistry |
| carrier atom in organic reaction mechanisms |
| carrier-free |
| carrier gas |
| carry-over |
| carry-over effect |
| cascade impactor |
| catabolism |
| catabolite repression |
| catalase |
| catalymetric titration |
catalysed rate of reaction,  |
| catalysis |
| catalysis law |
| catalyst |
| catalyst in solvent extraction |
| catalyst ageing |
| catalyst deactivation |
| catalyst decay |
catalytic activity,  of an enzyme |
catalytic activity concentration,  |
catalytic activity content,  |
| catalytic activity fraction of an isozyme |
| catalytic coefficient |
| catalytic concentration |
| catalytic content |
| catalytic cracking |
| catalytic current |
| catalytic current, limiting |
| catalytic dehydrocyclization |
| catalytic domain of a polypeptide |
| catalytic fraction |
| catalytic graphitization |
| catalytic hydrocracking |
| catalytic hydrodesulfurization |
| catalytic hydrogenolysis |
| catalytic methanation |
| catalytic reforming |
| catalytic thermometric titration |
| cataphoresis |
| catecholamines |
| catena- |
| catenanes (catena compounds) |
| cathode |
cathodic transfer coefficient,  quantity |
| cation |
| cation exchange |
| cation exchanger |
| cationic polymerization |
| cationotropic rearrangement |
| cationotropy |
| cation radical |
| cavitands |
| cavity dumping in photochemistry |
| cDNA |
ceiling value ( )quantity |
| ceilometer in atmospheric chemistry |
| cell constant of a conductivity cell |
| cell error in spectrochemical analysis |
| cell line |
Celsius temperature,  ,  quantity |
| centiSI unit prefix |
| central atom |
| centre of a Mossbauer spectrum |
| centre of chirality |
centrifugal (centripetal) acceleration,  quantity |
| centrifugal barrier |
| centrifugal flow |
centrifugal force,  quantity |
centrifugal radius,  quantity |
| cephalins (kephalins) |
| cephalosporins |
| cephams |
| cephems |
| ceramic filter |
| Cerenkov detector |
| Cerenkov effect |
| Cerenkov radiation |
| chain in polymers |
| chain axis of a polymer |
| chain branching |
| chain carrier |
| (chain) conformational repeating unit of a polymer |
| chain-ending step |
| chain fission yield |
| chain folding in polymer crystals |
| (chain) identity period of a polymer |
| chain initiation |
chain length,  |
| chain-orientational disorder in polymer crystals |
| chain polymerization |
| chain-propagating reaction |
| chain reaction |
| chain scission of a polymer |
| chain-termination reaction |
| chain transfer |
| chair, boat, twist |
| chair–chair interconversion |
| chalcones |
| chamber saturation in gas chromatography |
| change of a quantity |
| change ratio of a quantity |
| channel |
| channel black |
| channel photomultiplier tube |
| chaperon |
| char |
| characteristic in analytical chemistry |
| characteristic group in organic nomenclature |
| characteristic length in thin films |
characteristic mass for integrated absorbance,  in electrothermal atomizationquantity |
characteristic mass for peak absorption,  in electrothermal atomizationquantity |
characteristic mass,
in electrothermal atomizationquantity |
| characteristic potential |
| characteristic ratio in polymers |
| characteristic scale in thin films |
| characteristic X-radiation |
| characteristic X-ray emission |
| charcoal |
| charge |
charge density,  quantity |
| charge-exchange ionization in mass spectrometry |
| charge-exchange reaction |
| charge hopping |
| charge-inversion mass spectrum |
charge number,  quantity |
| charge number in inorganic nomenclature |
charge number  ,  ,
 of a cell reactionquantity |
| charge-permutation reaction |
| charge population |
| charge recombination |
| charge separation |
| charge shift |
| charge-stripping reaction |
| charge-transfer adsorption |
| charge-transfer complex |
| charge-transfer device in radiation detection |
| charge-transfer reaction in mass spectrometry |
| charge-transfer
(CT) state |
| charge-transfer step of an electrode reaction |
| charge-transfer (CT) transition |
| charge transfer transition to solvent
(CTTS) |
| charring |
| chelate |
| chelation |
| chelatometric titration |
| cheletropic reaction |
| chelotropic reaction |
| chemical actinometer |
| chemical activation |
| chemical adsorption |
| chemical amount |
| chemical decomposition |
| chemical diffusion |
| chemical dosimeter |
| chemical element |
| chemical equilibrium |
chemical flux,  quantity |
| chemical induction (coupling) |
| chemical ionization in mass spectrometry |
| chemical isotope exchange |
| chemical laser |
| chemical species |
| chemical species of an element |
| chemically induced dynamic nuclear polarization
(CIDNP)
|
| chemical measurement process (CMP) |
chemical oxygen demand ( )quantity |
chemical potential,  quantity |
| chemical reaction |
| chemical reaction equation |
| chemical relaxation |
chemical shift,  in NMRquantity |
| chemical shift in photoelectron and Auger spectra |
| chemical substance |
| chemical vapour generation
in spectrochemical analysis |
| chemical yield |
| chemiexcitation |
| chemiflux |
| chemi-ionization in mass spectrometry |
| chemiluminescence |
| chemiluminescence analyser |
| chemiluminescent methods of detection in analysis |
| chemisorption (chemical adsorption) |
| chemometrics |
| chemoselectivity (chemoselective) |
| chemospecificity |
| chemostat |
| chimney effect in atmospheric chemistry |
| chiral |
| chiral mobile phase |
| chiral selector |
| chiral stationary phase in liquid chromatography |
| chirality |
| chirality axis |
| chirality centre |
| chirality element |
| chirality plane |
| chirality sense |
| chiroptic/chiroptical |
| chirotopic |
| chloramines |
| chlorocarbons |
| chlorohydrins |
| chloronium ions |
| cholesteric phase |
| chromatogram |
| chromatograph (noun) |
| chromatograph (verb) |
| chromatographic detector |
| chromatography |
| chromophore |
| chromosome |
| chronic toxicity |
| CIDEP (Chemically Induced Dynamic Electron
Polarization)
|
| CIDNP (Chemically Induced Dynamic Nuclear
Polarization)
|
| CIEEL (Chemically Initiated Electron Exchange
Luminescence)
|
| cine-substitution |
| CIP priority |
| C. I. P. system |
| circular development |
| circular dichroism (CD) |
| circular elution |
| circular frequency |
| cis- in inorganic nomenclature |
| cis conformation in polymers |
| cis-fused |
| cisoid conformation |
| cistactic polymer |
| cis, trans |
| cis-trans isomers |
| class (a) metal ion |
| class (b) metal ion |
| class of helix in polymers |
| clathrates |
| clausiusunit |
| clean surface |
| clean up in spectrochemical analysis |
| clearance in toxicology |
clearance, 
quantity |
| clearing point |
| clinal |
| CLOGP values |
| clone |
| closed film |
| closed system in spectrochemical analysis |
| closo- |
| cloud in atmospheric chemistry |
| cluster |
| cluster analysis |
| cluster ion in mass spectrometry |
| coacervation |
| coagulation (flocculation) in colloid chemistry |
| coal-derived pitch coke |
| coalescence in colloid chemistry |
| coalification |
| coal tar pitch |
| cobalamines |
| codon |
| coefficient |
coefficient of haze ( ) in atmospheric chemistryunit |
| coenzyme |
| coextraction |
| cofactors |
coherence length,  in thin filmsquantity |
| coherent radiation |
| coherent scattering |
| coherent source in spectrochemistry |
| coherent structure |
| coherent system of units of measurement |
| coherent (derived) unit of measurement |
| coincidence circuit |
| coincidence resolving time |
| co-ions |
| coke |
| coke breeze |
| coking |
| col (saddle point) |
|
CO2
laser |
| cold neutrons |
| collection |
| collection efficiency in atmospheric chemistry |
| collection gas flow system
in spectrochemical
analysis |
| collector in atmospheric chemistry |
| collector (scavenger) |
| colligation |
| collimation |
| collimator |
| collinear reaction |
| collisional activation (collisionally activated
dissociation)
in mass spectrometry |
| collisional broadening of a spectral line |
| collisional excitation in mass spectrometry |
| collision complex |
collision cross-section,  quantity |
collision density,  quantity |
collision diameter,  quantity |
collision efficiency,  quantity |
collision frequency,  quantity |
| collision-induced dissociation
in mass
spectrometry |
| collision number |
| collision theory |
| colloid |
| colloidal |
| colloidal carbon |
| colloidal dispersion |
| colloidal electrolyte |
| colloidally stable |
| colloidal suspension |
| colloid osmotic pressure (Donnan pressure) |
| colorimeter |
| colour indicator |
| column in chromatography |
| column chromatography |
column volume,  in chromatography |
| combination electrode |
| combined sample |
| comb macromolecule |
| comb polymer |
| combustion gas |
| commensurate–incommensurate transition |
| common black film |
| common-ion effect (on rates) |
| communities (consortia, syntrophic or synergistic
associations)
|
| compact layer in electrochemistry |
| comparative molecular field analysis (CoMFA) |
| comparator in radioanalytical chemistry |
| compartmental analysis |
| compensation in catalysis |
| compensation in stereochemistry |
| compensation effect |
| competition |
| competitive binding assay |
| competitive inhibition of catalysis |
| complementary binding sites |
| complementary DNA
(cDNA) |
| complex |
| complex coacervation |
| complex mechanism |
| complex-mode reaction |
| complexometric titration |
| complex reaction |
| component |
| composite mechanism |
| composite membrane |
| composite reaction |
| composite sample |
| compositional heterogeneity of polymers |
| composition of pure air in atmospheric chemistry |
| compressibility factor |
compression factor,  quantity |
| comproportionation |
| Compton effect |
| Compton electron |
| Compton scattering |
| computational chemistry |
| computer-assisted drug design (CADD) |
| computer-assisted molecular design (CAMD) |
| computer-assisted molecular modeling (CAMM) |
| concave isotherm in chromatography |
| concentrated phase in polymer chemistry |
| concentration |
| concentration-cell corrosion |
concentration distribution ratio,
in chromatography |
| concentration factor in solvent extraction |
concentration gradient,  |
| concentration in experimental surface (or surface
concentration)
|
| concentration overpotential |
| concentration-sensitive detector in chromatography |
| concentration thermometric technique
in enthalpimetric analysis |
| concerted process |
| condensation in atmospheric chemistry |
| condensation nuclei (CN) in atmospheric chemistry |
| condensation polymerization (polycondensation) |
| condensation reaction |
| condensative chain polymerization |
| conditional (formal) potential |
| conditional rate constant of an electrode reaction |
| conditioning in solvent extraction |
conductance,  |
| conduction band |
conductivity,  ,  quantity |
| confidence level |
| confidence limits (about the mean) |
| configuration (electronic) |
| configuration (stereochemical) |
| configurational base unit in polymers |
| configurational disorder in polymers |
| configurational homosequence in polymers |
| configurational repeating unit in polymers |
| configurational sequence in polymers |
| configurational unit in polymers |
| configuration interaction (CI) |
| confined atomizer |
| conformation |
| conformational analysis |
| conformational analysis in drug design |
| conformational disorder in polymers |
| conformational repeating unit of a polymer |
| conformer |
| congener |
| conglomerate |
| congruent transition |
| coning and quartering in analytical chemistry |
| conjugate acid–base pair |
| conjugated system (conjugation) |
| conjugate solutions |
| conjugation |
| conjugation in gene technology |
| conjugation labelling in radioanalytical chemistry |
| conjugative mechanism |
| conjunctive name |
| connectivity |
| conrotatory |
| consecutive reactions |
| consecutive steps |
| consignment in analytical chemistry |
| consistency |
| consolute point |
| constituent |
| constitution |
| constitutional heterogeneity of polymers |
| constitutional homosequence |
| constitutional isomerism |
| constitutional repeating unit
(CRU) in polymers |
| constitutional sequence in polymers |
| constitutional unit |
| constitutive enzymes |
| contact anglequantity |
| contact corrosion |
| contact ion pair |
| contact potential difference (Volta potential
difference)
|
| contamination |
| content |
| continuity inversion in solvent extraction |
| continuous analyser |
| continuous bed packing in liquid chromatography |
| continuous flow |
| continuous-flow cell in spectrochemical analysis |
| continuous flow enthalpimetry |
| continuous indication analyser |
| continuously curved chain in polymers |
| continuous measuring cell |
| continuous operation in analysis |
| continuous precipitation |
| continuous transition |
| contour length in polymers |
| contributing structure |
| controlled atmosphere in atmospheric chemistry |
| control material in analysis |
| control sample in analysis |
| convection (as applied to air motion) |
| convenience sample |
| conventional transition-state theory |
| conventional true value |
| conversion electron |
| conversion spectrum |
| convex isotherm in chromatography |
| co-oligomer |
| co-oligomerization |
| cooperative transition |
| cooperativity |
| coordinate covalence |
| coordinate link |
| coordination |
| coordination entity |
| coordination number |
| coordination polyhedron (polygon) |
| coordinatively saturated complex |
| coordinatively unsaturated complex |
| copolymer |
| copolymerization |
| copolymer micelle |
| copper vapour laser |
| coprecipitation |
| copy number in biotechnology |
| core atom in organic reaction mechanisms |
| coronands (coronates) |
| corrected emission spectrum |
| corrected excitation spectrum |
| corrected retention volume in gas chromatography |
| correlation analysis |
| correlation coefficient |
| correlation diagram |
| correlation energy |
| corrinoids (cobalamines, corphyrins, corrins, vitamin B12
compounds)
|
| corrosion |
| corrosion cell |
| corrosion current |
corrosion potential,  quantity |
| corrosion rate |
| co-solvency in polymers |
| cosolvent |
| cosphere |
| cotectic |
| coulombunit |
coulomb integral,  quantity |
| coulometric detection method
in electrochemical
analysis |
| coulometric titration |
| coumarins |
| count |
| counter-current flow |
| counter-ions |
| counter tube |
| counting efficiency |
| counting loss |
| counting rate |
| coupled (indicator) reaction in analysis |
| coupled simultaneous techniques in analysis |
| coupling |
coupling constant (spin-spin),  quantity |
| covalent bond |
| covalent network |
| Cox–Yates equation |
| cracking |
| crazing |
| cream |
| creaming |
| cream volume |
| cresols |
| critical embryo |
| critical energy (threshold energy) |
critical excitation energy,
in in situ microanalysisquantity |
critical micelle concentration ( )quantity |
| critical point |
critical pressure,  quantity |
critical quenching radius,  |
| critical solution composition |
| critical solution point |
| critical solution temperature |
| critical study |
critical temperature,  quantity |
| critical thickness of a film |
| cross-conjugation |
| crossed electric and magnetic fields
in mass spectrometry |
| crossed molecular beams |
| cross-flow filtration in biotechnology |
| crossing over in biotechnology |
| crosslink |
cross-over concentration,  |
| cross reaction |
| crowding in solvent extraction |
| crown |
| crown conformation |
| crud in solvent extraction |
| cryogenic |
| cryogenic sampling |
| cryptand |
| cryptate |
| crystal diffraction spectrometer |
| crystal field |
| crystal field splitting |
| crystal laser |
| crystalline electrodes |
| crystalline polymer |
| crystallinity |
| crystallization |
| CT |
| C-terminal residue in a polypeptide |
| cumulative double bonds |
| cumulative fission yield |
| cumulative sample |
| cumulenes |
| cumulonimbus cloud in atmospheric chemistry |
| cumulus cloud in atmospheric chemistry |
| cupola |
| curieunit |
| current densityquantity |
| current density (relative local) |
| current distribution |
| current efficiency |
| current migration |
| current yield |
| Curtin–Hammett principle |
| cut off in aerosol sizes in atmospheric chemistry |
| cut-off filter |
| CVD diamond |
| CW |
| cyanates |
| cyanides |
| cyanine dyes |
| cyanogenic |
| cyanohydrins |
| cybotactic region |
| cycles per second |
| cyclic acid anhydrides (cyclic anhydrides) |
| cyclitols |
| cyclization |
| cyclo- |
| cycloaddition |
| cycloalkanes |
| cycloalkyl groups |
| cyclodepsipeptides |
| cyclodextrins |
| cycloelimination |
| cyclohexadienyl cations |
| cyclone (collector) in atmospheric chemistry |
| cyclophanes |
| cyclopolymerization |
| cycloreversion |
| cyclosilazanes |
| cyclosiloxanes |
| cyclotron |
| cytochrome P450 |
| cytochromes |
