Chemicals in medicines - Analgesics, tranquilizers, antiseptics, disinfectants, antimicrobials, antifertility drugs, antibiotics, antacids, antihistamins - their meaning and common examples. (45 concepts)
Chemicals in food - Preservatives, artificial sweetening agents - common examples (7 concepts)
Cleansing agents - Soaps and detergents, cleansing action (12 concepts)