The Naming of Alkanes Flashcards Preview

Chemistry: 21 - Fuels and Heats of Reactions > The Naming of Alkanes > Flashcards

Flashcards in The Naming of Alkanes Deck (15)
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1
Q

Who draws up the rules for naming organic compounds?

A

The International Union of Pure and Applied Chemistry

2
Q

What are IUPAC names also knows as?

A

Systematic names

3
Q

What are side chains also called?

A

Substituent groups or branches

4
Q

What are side chains/branches?

A

Groups of atoms attached to the main carbon chain

5
Q

What side chains/branches are usually found in alkanes?

A

Alkyl groups

6
Q

What is an alkyl group?

A

An alkane molecule from which a hydrogen atom has been removed

7
Q

List three different types of alkyl groups

A

Methyl groups
Ethyl groups
Propyl groups

8
Q

Give the molecular formula for a methyl group

A

CH3

9
Q

Give the molecular formula for an ethyl group

A

C2H5

10
Q

Give the molecular formula for a propyl group

A

C3H7

11
Q

What changes to the name of an alkyl group if there are two identical alkyl groups present in a molecule

A

The alkyl group gains the prefix ‘di’ e.g. dimethyl

12
Q

What does diethyl indicate?

A

This indicates that there are two identical ethyl groups present in this molecule

13
Q

What is 2,2,4-trimehtylpentane?

A

An isomer of octane

14
Q

What is the traditional name for 2,2,4-trimehtylpentane?

A

Iso-octane

15
Q

What is different about cyclohexane when its structural formula is compared to the other alkanes?

A

Its carbon atoms are arranged in the form of a ring