- permanganic
- peroxyde
- pH
- phenacain
- phenol
- phenolic
- phlozirin
- phosphide
- phosphinic
- phosphite
- phosphoric
- phosphorus
- phosgene
- phosphate
- phosphine
- phosphorate
- picric
- piezochemistry
- platinous
- platonum
- pleomorphism
- plumbic
- pleomorphic
- plutonium
- platinic
- polyamide
- polymeric
- polymerization
- polymerize
- potassium
- polonium
- polymer
- polymerise
- polymerism
- polyplast
- polyvalent
- potash
- praseodymium
- precipitability
- precipitant
- precipitate
- precipitation
- preservative
- preserve
- preservation
- prime
- principle
- product
- proenzyme
- promoter
- proteid
- promote
- protein
- ptomaine
- protactinium
- protium
- prussic
- quadrivalency
- qualitative
- quantitative
- quadrivalent
- quaternary
- quadrivalence
- quartation
- quaternization
- quinquivalent
- quinic
- quinquevalent
- quinquivalence
- quinquivalency
- radical
- radii
- radium
- radon
- rare
- react
- reactant
- reaction
- reactive
- reactivate
- rectifiable
- receiver
- rectification
- rectifier
- red lead
- reduce
- rectify
- redistil
- reducer
- regenerator
- reducible
- reducing agent
- reductant
- reduction
- release
- rennin
- residua
- residuum
- resolve
- resolver