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Question 1

is an atom or group of atoms with characteristic chemical and physical properties. It contains a heteroatom, multiple bonds, or sometimes both a heteroatom and a multiple bonds.

Answer 1

functional group

Question 2

The functional group determines a molecule’s shape, properties, and the type of reaction it undergoes.

Answer 2

functional group

Question 3

The most common functional groups can be subdivided into three types -

Answer 3

hydrocarbons,
compounds containing a single bond to heteroatom and
compounds containing a carbonyl group C═O.

Question 4

are organic compounds that contain only the elements of carbon and hydrogen. The classification is shown in the diagram while examples with functional groups are enumerated in the table.

Answer 4

Hydrocarbons