- rhenium
- rhodium
- residue
- retort
- revivifier
- saccharic
- saffranin
- saccharification
- saccharin
- saccharometer
- rubidium
- saccharide
- saccharimeter
- saccharine
- safranin
- sal
- sal-ammoniac
- saleratus
- salicylic
- salt
- ruthenium
- saccharate
- saccharify
- saccharimetry
- salicin
- salicylate
- saponin
- selenate
- selenic
- selenium
- self-setting
- series
- selenide
- sesquioxide
- sexivalent
- shell
- silica
- siliceous
- silicic
- siliciferous
- silicious
- silicon
- silicone
- sodium
- soda
- sol
- sorbic
- soda ash
- solanine
- spartein
- spermine
- split
- stannic
- stearin
- stearate
- stearic
- stereoisomer
- stibine
- sterol
- stilbene
- stibium
- streptokinase
- styrene
- substrate
- sulphide
- sulphonate
- sulphonic
- sulphurous
- strontium
- succinic
- sulphur
- sucrose
- sublimate
- sublimation
- sulphurization
- supramolecular
- sucrase
- sulphate
- sulphonium
- sulphuric
- sulphurize
- suspension
- synergist
- tantalum
- tartaric
- tautomerism
- tannic
- tannin
- telluric
- tellurium
- terbium
- terebenthena
- ternary
- test
- test-tube
- tetravalent
- thallium
- thein
- tetrad
- tetravalence