Chemistry
Articles about matter, substances, reactions and chemical science.
Galactose
Gallium
Gallium arsenide
Galvanizing
Galvanizing: protective zinc coatings for corrosion control
gamma-Hydroxybutyric acid
Garnet
Gas
Gas chromatography
Gas chromatography: principles, instrumentation, and applications
Gas chromatography–mass spectrometry
Gas chromatography–mass spectrometry (GC–MS): principles, instruments, and applications
Gas syringe
Gasoline
Gasoline (Petrol): Properties, Production, Uses, and Safety
Gasoline additives
Gasoline Fuel Additives: Types, Functions, and Engine & Environmental Impacts
Gel
Gel (semi-solid colloidal material)
Germanium
Gibbs free energy
Thermodynamic potential that predicts reaction spontaneity at constant pressure and temperature. Defined as G = H − T S; used across chemistry, physics, and engineering to assess e
Glass
Glass: composition, types, history and practical uses
Glass rod
Glass transition
Glass transition (Tg): the change from rigid to rubbery in amorphous materials
Glucose
Glucose: a simple sugar, its structure, role in metabolism, and history
Glue
Glue (adhesive): types, history, uses, and safety
Glutamic acid
Glutamic acid: properties, biological roles, and uses
Glycerol
Glycerol: properties, structure, history and common uses
Gold
Graduated cylinder
Graphene
Graphite
Green
Green chemistry
Green chemistry: principles, history, disciplines and applications
Grignard reaction
Grignard reaction — organomagnesium additions for carbon–carbon bond formation
Group (periodic table)
Group 11 element
Group 11 elements — copper, silver, gold and roentgenium (coinage metals)
Group 12 element
Group 14 element
Group 14 (Carbon Group): properties, elements, and uses
Overview of Group 14 of the periodic table: electronic structure, elemental members (C, Si, Ge, Sn, Pb), typical oxidation states, physical trends, occurrences and principal applic
Group 16 element
Group 3 element
Group 3 (periodic table)
Group transfer reaction
Guanine
Guanine: a purine nucleobase in DNA and RNA
Gunmetal
Gunmetal (red brass): composition, properties, history and uses
Gunpowder
Gunshot residue
Gunshot residue (GSR): formation, detection, forensic use, and limitations
Gypsum
Gypsum (calcium sulfate dihydrate): properties, uses, and varieties
Haber process
Haem
Haem (heme): iron–porphyrin cofactors in biology
Hafnium
Hafnium (Hf): properties, occurrence, history and uses
Half-life (element)
Halide
Halide (chemistry)
Hallucinogen
Haloalkane
Haloalkane (alkyl halide)