chain axis of a polymer , 237 chain branching, 237 chain carrier, 237 (chain) conformational repeating unit of a polymer , 237 chain entanglement, 238 chain fission yield, 238 chain folding in polymer crystals, 238 (chain) identity period of a polymer , 238 chain in polymers , 238 chain initiation, 239 chain length, , 239 chain polymerization, 239 chain reaction, 240 chain scission of a polymer , 241 chain transfer, 241 chain-ending step, 242 chain-orientational disorder in polymer crystals , 242 chain-propagating reaction, 242 chain-termination reaction, 242 chair, boat, twist, 242 chair–chair interconversion, 243 chalcones, 243 chamber saturation in gas chromatography , 244 change of a quantity, 244 change ratio of a quantity, 244 channel, 244 chaperon, 245 char, 245 characteristic group in organic nomenclature , 245 characteristic in analytical chemistry , 246 characteristic length in thin films, 246 characteristic mass for integrated absorbance, in electrothermal atomization , 246 characteristic mass for peak absorption, in electrothermal atomization , 246 characteristic mass, in electrothermal atomization, 247 characteristic potential, 247characteristic ratio in polymers , 247 characteristic X-ray emission, 247 charcoal, 248 charge, 248 charge density, , 248 charge hopping, 249 charge number, , 249 charge number in inorganic nomenclature , 249 charge number , , of a cell reaction , 249 charge population, 249 charge recombination, 250 charge separation, 250 charge shift, 250 charge transfer transition to solvent (CTTS), 250 charge-exchange ionization in mass spectrometry , 250 charge-exchange reaction, 251 charge-inversion mass spectrum, 251 charge-permutation reaction, 251 charge-stripping reaction, 251 charge-transfer adsorption, 252 charge-transfer complex, 252 charge-transfer (CT) state, 252 charge-transfer (CT) transition, 252 charge-transfer device in radiation detection , 253 charge-transfer reaction in mass spectrometry , 253 charge-transfer step of an electrode reaction , 253 charring, 254 chelate, 254 chelating polymer, 254 chelation, 254 cheletropic reaction, 255 chelotropic reaction, 255 chemi-ionization in mass spectrometry , 255 chemical actinometer, 256 chemical activation, 256 chemical amount, 256 chemical amplification, 256 chemical bond, 257 chemical decomposition, 257 chemical diffusion, 257 chemical dosimeter, 257 chemical element, 258 chemical equilibrium, 258 chemical flux, , 258 chemical functionality, 259