_AS_ 2

Question 0

Molecular formula

Answer 0

The actual number of atoms of each element in a molecule

Question 1

Empirical Forumla

Answer 1

The simplest whole number ratio of atoms of each element present in a compound

Question 2

General formula

Answer 2

The simplest algebraic formula of a member of a homologous series.

E.g. For alkane CnH2n+2

Question 3

Structural formula

Answer 3

The minimal detail that shows the arrangement of atoms in a molecule

Question 4

Displayed formula

Answer 4

The relative positioning of atoms and the bonds between them

Question 5

Skeletal formula

Answer 5

The simplified organic formula, shown by removing hydrogen atoms from alkyl chains, leaving just a carbon skeleton and associated functional group

Question 6

Homologous series

Answer 6

A series of organic compounds having the same functional group, but with each successive member differing by CH2

Question 7

Functional group

Answer 7

A group of atoms responsible for the characteristic reactions of a compound

Question 8

Structural isomers

Answer 8

Compounds with the same molecular formula but different structures

Question 9

Stereoisomers

Answer 9

Compounds with the same structural formula formula but with a different arrangement arrangement in space

E.g. Cis/trans.
Optical isomers

Question 10

E/Z isomerism

Answer 10

Caused by restricted rotation of a double bond with 2 different groups attached to each carbon atom of C=C

Question 11

cis trans isomerism

Answer 11

E.g. Some must contains 2 hydrogen atoms bonded to each carbon