alkyl shiftalkylaminealkylating agentalkylationalkylation agentalkylborancealkynealkynesallotriomorphismallotropeallotropismallotropyallowed energy levelsallowed quantum stateallowed vibrationsalloyallylallyl alcoholallyl isosulfocyanateallyl isothiocyanatealpha particlealternating axis of symmertyalternating copolymeralternating currentalumaluminatealuminiumaluminium foilaluminumamamagat lawamalgamambergrisamericiumamideaminationamineamine terminusaminoamino acidamino groupamino sugaraminomethanamidineaminophenolammoniaammonia waterammoniacammoniumammonium saltammonium sulfate
