Chem - IUPAC rules

Question 1

How are molecules named?

Answer 1

Following the IUPAC rules

Question 2

What are the rules for naming compounds known as?

Answer 2

Nomenclature

Question 3

What is the name stem?

How is it decided?

Answer 3

The first part of the name

It is decided by the number of carbon atoms

Question 4

Stem

What is the name used for 1 carbon?

Answer 4

Meth-

Question 5

Stem

What is the name used for 2 carbons?

Answer 5

Eth-

Question 6

Stem

What is the name used for 3 carbons?

Answer 6

Prop-

Question 7

Stem

What is the name used for 4 carbons?

Answer 7

But-

Question 8

Stem

What is the name used for 5 carbons?

Answer 8

Pent-

Question 9

What is the name ending come from?

Answer 9

The functional group

Question 10

Name ending

What does carboxylic acid become?

Answer 10

Propan oic acid

Question 11

Name ending

What does alcohol become?

Answer 11

Ethan ol

Question 12

Name ending

What does ketone become?

Answer 12

Propan one

Question 13

Name ending

What does aldehyde become?

Answer 13

Ethan al

Question 14

What are complex molecules?

Answer 14

Molecules that have multiple functional groups or side chains

Question 15

Naming conventions

What is the molecule always named after?

Answer 15

The longest possible carbon chain that includes the functional group

Question 16

Naming conventions

Why are carbons numbered?

Answer 16

To give the functional group the lowest number possible

Question 17

Naming conventions

What are side chains written as?

Answer 17

Prefixes to the name

Question 18

What do you add to the name of the molecule contains rings?

Answer 18

Add ‘cyclo-‘ at the start of the name

E.g.

Cyclo hexane

Cyclo hexanol

Cyclo hexanone