- gram atom
- gramme-atom
- graduate
- gram molecule
- gravimetry
- group
- haematin
- hafnium
- halocarbon
- halogenation
- haloid
- guanidine
- guanine
- halogen
- halogenate
- halogenous
- hartshorn
- heavy
- heavy water
- helium
- hematin
- hemiacetal
- hemicellulose
- heptane
- heptavalent
- heptose
- heteroatom
- heterocyclic
- hexane
- hexose
- hesperidin
- heterocylic
- hexatomic
- hexavalent
- histamine
- holmium
- homogenise
- homologize
- homology
- homocyclic
- homogenize
- homological
- homologise
- homologous
- homologue
- humic acid
- hydragyrum
- hydrate
- hydration
- hydrazide
- hydrazoic acid
- hydrocyanic
- hydrolysis
- hydroxide
- hypo
- hydrazine
- hydric
- hydrocarbon
- hydrofluoric
- hydrogen
- hydroquinone
- hypochlorite
- idiomorphic
- hydride
- hydrochloric
- hyposulphite
- idiomorphism
- illinium
- imidazole
- imide
- imidic
- inactivate
- inactivation
- indicator
- inhibit
- inhibition
- inhibitor
- indifferent
- indium
- inert
- inertness
- insulin
- interactant
- intermediate
- inulin
- inverted sugar
- inversion
- invert
- invertasre
- iodic
- iodine
- ionise
- ionize
- irreversibility
- irreversibleness
- iodide
- iridium
- irreversible
- isobar
- isobaric