Isomers

Question 1

What is a structural isomer?

Answer 1

An isomer with the same molecular formula but a different structural formula

Question 2

What is a chain isomer?

Answer 2

An isomer which occurs when the carbon chain is arranged differently

Question 3

What are the types of structural isomers?

Answer 3

Chain
Position
Functional group

Question 4

What is a a functional group isomer?

Answer 4

Occur when compounds have a different functional group

Question 5

What is a functional group?

Answer 5

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

Question 6

What is an isomer?

Answer 6

Same molecular formula and a different structure

Question 7

What is a stereoisomer?

Answer 7

Isomers are molecules that have the same structural formula, but have a different arrangement of the atoms in space.

Question 8

Give the types of stereoisomer?

Answer 8

E/Z isomer

Cis/Trans isomer

Question 9

What is the difference between E/Z isomers?

Answer 9

Z isomer - stands for zusammen, means together (zee zame zide)
E isomer - stands for entgegen, means opposite (enemies)

Question 10

What is the difference between Cis/Trans isomer?

Answer 10

Cis - H on the same side

Trans - H on opposite sides

Question 11

What are Cis/Trans isomers?

Answer 11

Special case of E/Z isomerism if there is a double bond present and if different groups are attached to each carbon BUT one atom on each of these must be a hydrogen

Question 12

How do we name an isomer if all the groups are different?

Answer 12

Find the Mr of each compound. Place them in order of priority. If the two highest priority are on the same side of a double bond then it is a Z isomer and vice versa

Question 13

What is a position isomer?

Answer 13

An isomer which occurs when functional group is on a different carbon atom