absolute activity,  | | | |
absolute lethal concentration ( ) | absolute lethal concentration ( ) |  |  |
absolute lethal dose ( ) | absolute lethal dose ( ) |  |  |
absorbance,  | absorbance,  |  |  |
absorbance,  |  |  |
absorbance,  |  |  |
absorbance,  |  |  |
absorptance,  | absorptance,  |  |  |
absorptance,  |  |  |
absorptance,  |  |  |
decadic absorbance,  |  |  |
absorption cross-section,  | absorption cross-section,  |  |  |
acceleration,  | | | |
acceleration of free fall,  | | | |
acceptable daily intake ( ) | acceptable daily intake ( ) |  |  |
acceptable daily intake ( ) |  |  |
acceptable daily intake ( ) |  |  |
acceptable daily intake ( ) | acceptable daily intake ( ) |  |  |
acceptable daily intake ( ) |  |  |
acceptable daily intake ( ) |  |  |
acceptor number ( ) | acceptor number ( ) |  |  |
actinic flux  | actinic flux  |  |  |
| activation energy (Arrhenius activation energy) | activation energy (Arrhenius activation energy) |  |  |
| compensation in catalysis |  |  |
| compensation in catalysis |  |  |
activity, of a radioactive material | activity, of a radioactive material |  |  |
activity, of a radioactive material |  |  |
activity (relative activity),  | activity (relative activity),  |  |  |
activity (relative activity),  |  |  |
activity coefficient, ,  | activity coefficient, ,  |  |  |
activity coefficient, ,  |  |  |
affinity of reaction,  | affinity of reaction,  |  |  |
amount concentration,  | amount concentration,  |  |  |
amount fraction, ( for gaseous mixtures) | amount fraction, ( for gaseous mixtures) |  |  |
amount fraction, ( for gaseous mixtures) |  |  |
amount-of-substance fraction,  |  |  |
amount of substance,  | amount of substance,  |  |  |
| conditional (formal) potential |  |  |
| angle | | | |
angle of optical rotation,  | angle of optical rotation,  |  |  |
angular frequency,  | angular frequency,  |  |  |
angular momentum,  | angular momentum,  |  |  |
angular momentum,  |  |  |
atomic mass  | atomic mass  |  |  |
atomic number (proton number),  | atomic number (proton number),  |  |  |
attenuance,  | attenuance,  |  |  |