Hydroxyl, sulfhydryl, carbonyl, carboxyl, amino and phosphate groups. Alcohols and thiols.
Structural isomers, stereoisomers, geometric isomers, cis-trans isomers, and enantiomers.
Bronsted-Lowry definition of acids and bases. Conjugate acids and bases.
Overview of the Bolshevik Revolution and the end of the Romanov Dynasty.
Examples interpreting graphs of proportional relationships