the.com/stereochemistry
Same atoms, same bonds, different handshake — and your nose can tell the difference.
means The branch of chemistry concerned with the 3D arrangement of atoms in molecules and how that spatial arrangement affects their properties and behavior.
from Built from Greek stereos ('solid' — the same root that gives us 'stereo' sound, which comes at you from solid, multiple directions) plus 'chemistry' itself, ultimately from alchemy and Arabic al-kīmiyā. The field took shape in the 1800s as chemists like van't Hoff and Le Bel realized molecules weren't flat diagrams on paper but solid shapes occupying real space — and that two molecules with identical atoms and bonds could be mirror images of each other, like left and right hands, with startlingly different effects on smell, taste, or biological activity.
- thalidomide lesson
- one mirror twin healed, the other caused birth defects
- smell test
- carvone enantiomers smell like spearmint versus caraway
- naming rule
- R and S come from priority, not left or right
- body's bias
- enzymes only fit one hand, like a glove