- abietene
- accelerant
- acetate
- acetic
- accentuator
- accelerator
- acceptor
- acid
- acetylene
- acidifier
- actinic
- actinide
- actinium
- actinometer
- actinon
- activate
- activity
- acidification
- actinism
- adsorb
- adsorbate
- adsorbent
- adsorber
- adsorption
- affinity
- agglomerant
- agglomerate
- agglomeration
- alanine
- albumen
- aldol
- albumin
- albuminoid
- aldehyde
- alicylic
- alizarine
- alkali
- alkalifiable
- alkalimetric
- alkalimetry
- alkalization
- alkalize
- algicid
- aliphatic
- alizarin
- alkalescence
- alkalescent
- alkalify
- alkalimeter
- alkaline
- alkaloid
- alkane
- allethrin
- almandine
- aluminate
- amalgam
- amalgamate
- amalgamated
- amalgamation
- amalgamator
- americium
- amide
- amidin
- amidol
- amine
- ammine
- ammonia
- amyl
- amylic
- analyser
- analyses
- anthracene
- anhydride
- aniline
- anisomeric
- antalkaline
- ammoniac
- ammoniacal
- ammonification
- ammonite
- ammonium
- amphoteric
- analysis
- anhydrous
- anorganic
- antalkali
- antimonate
- antimonic
- antimonious
- antimony
- aqua regia
- aquation
- aqueous
- argon
- aromatic
- arsenic
- arsenopyrit
- arsin
- arsenious
- arsenous