Question

How did the meaning of “organic” change during the 19th century?

Answer 1

Organic describes things that are natural or associated with nature. In common usage, organic is employed to mean “healthful” or “close to nature.” It also can describe foods grown without artificial pesticides or fertilizers. In other uses, organic refers to living things or material that comes from living things.

Complete answer:
Organic chemistry may be a subdiscipline of chemistry that studies the structure, properties and reactions of organic compounds, which contain carbon in covalent bonding. Study of structure determines their chemical composition and formula. Study of properties includes physical and chemical properties, and evaluation of chemical reactivity to know their behavior. The study of organic reactions includes the chemical synthesis of natural products, drugs, and polymers, and study of individual organic molecules within the laboratory and via theoretical (in silico) study.
The range of chemicals studied in chemistry includes hydrocarbons(compounds containing only carbon and hydrogen) also as compounds supporting carbon, but also containing other elements, especially oxygen, nitrogen, sulfur, phosphorus (included in many biochemicals) and therefore the halogens. Organometallic chemistry is that the study of compounds containing carbon–metal bonds.
In addition, contemporary research focuses on chemistry involving other organometallics including the lanthanides, but especially the transition metals zinc, copper, palladium, nickel, cobalt, titanium and chromium.

Note:
Chemistry may be a branch of chemistry that studies the structure, properties and reactions. During the primary half the nineteenth century, a number of the primary systematic studies of organic compounds were reported around. The latter half of the 19th century however witnessed systematic studies of organic compounds.