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1.6Naming alkane molecules with side chains

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Year 10 Chemistry, Mr Blaurock – Worksheet 6

1.6Naming alkane molecules with side chains

Try to work out the basics for naming alkane molecules with side chains using the examples below.

a) We differentiate

the molecule’s main chain from side chains. Where

does the main chain’s name appear in the molecule’s

name? Explain how the main chain in a molecule is

determined.

b) Explain the naming of side chains.

c) Explain the prefix „di“ in examples 2 and 3.

d) Explain the order in which the side chains in the last example on the right are listed.

e) Bonus: Explain the numbers that appear in the molecule’s names

f) Bonus 2: Name the molecule!

2-Ethylpentane 2-Methylbutane

2,3-Dimethylbutane 2,3-Dimethylpentane

5-Ethyl-2,3-dimethyl-4-propylheptane

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