(n) quantum chemistry
(n) chemical structural formula
(n) chemical seasoning
(n,vs) chemical digestion
(n) chemical additives
(n) chemical thermodynamics
(n) reaction formula
(n) chemical physics
(n) chemical equation
(n) photochemical pollution
(n) photochemical reaction
(n) high polymer chemistry
(n) evolutionary species
(n) fine chemical (high precision chemicals, typically used in pharmaceutical products)
(n) (study of) molecular evolution
(n) gas chemical industry
(n) colloid chemistry
(n) chemical contamination disaster
(n) chemiosmotic hypothesis
(n) chemical messenger
(n) synthetic chemical industry
(n) biological and chemical weapons
(n) Nobel Prize in Chemistry
(n) chemical energy
(n) photochemical smog
(n) chemical potential
(n) chemical oxygen demand
COD
(n) chemical weapons ban treaty
(n) smog alert
(n) biochemical oxygen demand
BOD