| fabric filter |
| fac- |
| factor |
| factor-group splitting |
| fallout in atmospheric chemistry |
| fall time |
| fanning in atmospheric chemistry |
| faradunit |
| faradaic current |
| faradaic current density |
| faradaic demodulation current |
| faradaic rectification current |
| Faraday constantconstant |
| Faraday cup (or cylinder) collector |
| fast atom bombardment ionization |
| fast-atom bombardment (FAB) mass spectroscopy |
| fast neutrons |
| fatty acids |
| feedback in analysis |
| feedback in kinetics |
| feed-back inhibition (end product inhibition)
in biotechnology |
| feed rate in catalysis |
| femtoSI unit prefix |
| fenestranes |
| Fenton reaction |
| fermentation |
| fermenter |
| fermiunit |
| Fermi energy |
Fermi level,  |
| fermion |
| feromone |
| ferredoxin |
| ferrimagnetic transition |
| ferrocenophanes |
| ferroelastic transition |
| ferroelectric (antiferroelectric) transition |
| ferroic transition |
| ferromagnetic transition |
| fertile in radioanalytical chemistry |
| f-functional branch point |
| f-functional branch unit |
| fibrous activated carbon |
| fibrous carbon |
| fibrous crystal in polymers |
| fiducial group |
| field desorption in mass spectrometry |
| field effect |
| field effect phototransistor |
| field ionization in mass spectrometry |
| field level |
| filamentous carbon |
| filler |
| filler coke |
| filling solution of a reference electrode |
| film |
| film badge in radioanalytical chemistry |
| film element |
| film tension |
| filter |
| filter of a radiation |
| filter spectrometer |
| filtration |
fine structure constant,  constant |
| first-order phase transition |
| first-pass effect |
| Fischer projection (Fischer–Tollens projection) |
| Fischer–Rosanoff convention (or Rosanoff convention) |
| Fischer–Tollens projection |
| fissile in radioanalytical chemistry |
| fissionable |
| fission fragment ionization in mass spectrometry |
| fission fragments |
| fission neutrons |
| fission products |
| fission yield |
| fixed ions |
| fixed neutral loss (gain) scan
in mass spectrometry |
| fixed neutral loss (gain) spectrum
in mass spectrometry |
| fixed precursor ion scan in mass spectrometry |
| fixed product ion scan in mass spectrometry |
| fixed product ion spectrum in mass spectrometry |
| flagpole |
| flame-in-tube atomizer in spectrochemical analysis |
| flame ionization detector in gas chromatography |
| flame photometric detector in gas chromatography |
| flame photometry |
| flammable limits |
| flash fluorimetry (phosphorimetry) |
| flash lamps |
| flash photolysis |
| flash point |
| flash vacuum pyrolysis (FVP) |
| flat band potential (at a semiconductor/solution
interphase)
|
| flat bands |
| flavins |
| flavonoids (isoflavonoids and neoflavonoids) |
| flavoproteins |
| flavylium salts |
| floating monolayer |
| floc |
| flocculation |
| floccule |
| Flory–Huggins theory |
| flotation |
| flow analysis |
| flow birefringence |
| flow enthalpimetry |
| flow injection |
| flow injection enthalpimetry |
| flow-programmed chromatography |
| flow rate in chromatography |
| flow rate
in flame emission and absorption spectrometry |
| flow rate of a quantity |
| flow rate of unburnt gas mixture
in flame emission and absorption spectrometry |
| flow reactor |
flow resistance parameter,  in chromatographyquantity |
| flue gas in atmospheric chemistry |
| flue gas scrubber in atmospheric chemistry |
fluence,  ,
 ,
 quantity |
| fluid coke |
fluidity,  quantity |
| fluidized bed |
| fluoresceins |
| fluorescence |
| fluorescence error in spectrochemical analysis |
| fluorescence excitation of X-rays |
| fluorescence yield |
| fluorimeter |
| fluorocarbons |
| fluorohydrins |
flux,  of a quantity |
| flux depression |
| fluxional |
| fly ash in atmospheric chemistry |
| f number |
| foam |
| foam fractionation |
| foaming agent |
| fog |
| fog horizon in atmospheric chemistry |
| folates |
| fold in polymer crystals |
| fold domain in polymer crystals |
| folded-chain crystal in polymers |
| fold plane in polymer crystals |
| fold surface in polymer crystals |
| footunit |
| forbidden line in X-ray spectroscopy |
force,  quantity |
| force constants |
| force-field calculation |
| foreign-gas broadening |
| formamidine disulfides |
| formation constant |
| formazans |
| Förster cycle |
| Förster excitation transfer (dipole–dipole excitation
transfer)
|
| forward scattering |
| fossil fuel |
| fouling agent in catalysis |
| fouling in membrane processes |
| Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer
|
| Fourier transform spectrometer |
| fraction |
| fractional change of a quantity |
| fractional selectivity in catalysis |
| fractionation of analytes |
| fractionation of polymers |
| fraction collector in chromatography |
fraction extracted,  quantity |
| fragmentation |
| fragmentation reaction in mass spectrometry |
| fragment ion in mass spectrometry |
| frame-shift mutation |
| Franck–Condon principle |
| Franck–Condon state |
| franklinunit |
| free charge density on the interface |
| free electron laser |
| free energy |
| freely draining |
| freely jointed chain in polymers |
| freely rotating chain in polymers |
| free radical |
| free rotation (hindered rotation, restricted
rotation)
|
| free-running laser |
| free spiro union |
| freezing |
| freezing out in atmospheric chemistry |
frequency,  ,  quantity |
| frequency distribution |
| frequency doubling |
frictional coefficient,
 in polymer chemistryquantity |
| friction coefficient |
friction factor,  quantity |
| fringed-micelle model in polymer crystals |
| frontal chromatography |
| frontier orbitals |
| fronting in chromatography |
| front surface geometry in luminescence |
| frost point hygrometer |
| froth flotation |
| Frumkin effect |
| fucolipid |
| fuel cycle (nuclear) |
| fuel element (nuclear) |
| fuel reprocessing (nuclear) |
fugacity,  ,  quantity |
fugacity coefficient,  quantity |
| fulgides |
| full energy peak |
| fullerenes |
| fulminates |
| fulvalenes |
| fulvenes |
| fume in atmospheric chemistry |
| fumes |
| fumigation in atmospheric chemistry |
| functional class name |
| functional group |
| functional parent |
| fungicide |
| furanocoumarins |
| furanoses |
| furnace black |
| furnace pyrolysis in spectrochemical analysis |
| furocoumarins |
| fusion in biotechnology |
| fusion name |
| FWHM (Full Width at Half Maximum) |
