1. Naming Alkanes and Hydrocarbons City and Islington College
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Students Name: …………………………………………………………………..

2. Topic Aims Method Equipment Duration Chemistry
This resource introduces Students to naming Alkanes and Hydrocarbons
Level
Level 3
Method
PowerPoint slides ALL SLIDES ARE HANDOUTS and TESTS (apart from slide 2, which will be hidden) – Go through the slides with the Students, and ask them to fill in the answers
Equipment
Laptop & Projector
Pens
Hand-Outs
Duration
>30 Minutes
Hidden

3. Alkanes, Alkenes & Arenes
All the above groups of compounds are hydrocarbons – they only contain the element’s carbon and hydrogen. These compounds are obtained from crude oil when it undergoes fractional distillation.
Naming hydrocarbons
Number of carbon atoms
Name begins with - 1
Meth 2
Eth 3
Prop 4
But 5
Pent 6
Hex 7
Hept 8
Oct
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4. Alkanes, Alkenes & Arenes
These compounds have the general formula CnH2n+2
Fill out the table below. The names end in –ane.
n =
Formula
Name 1 2 3 4 5 6 7 8
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5. Alkanes, Alkenes & Arenes
Structural Formula
Carbon always forms 4 covalent bonds.
Hydrogen always forms 1 covalent bond.
eg Methane Ethane
Draw the structural formula for the following:
Propane
Pentane
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6. Alkanes, Alkenes & Arenes
Rules for naming Hydrocarbons
Name the longest chain
_________________________________________________________
Name any side chains giving them the lowest possible number
Name any functional groups giving them the lowest possible number
Branch Names
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Name of branch
Formula
Methyl
CH3 -
Ethyl
CH3CH2 -

7. Alkanes, Alkenes & Arenes
2-methyl butane not 3 methyl butane
Name the following alkane structures.
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8. Alkanes, Alkenes & Arenes
Draw the following Alkane Structures
3 Methyl Pentane
2 Methyl Pentane
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2,2 Methyl Pentane

9. Alkanes, Alkenes & Arenes
These hydrocarbons have the general formula CnH2n
Fill out the table below. The name ends in –ene.
n =
Formula
Name 2 3 4 5 6 7 8
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10. Alkanes, Alkenes & Arenes
Structural formula - Recall each carbon has 4 bonds and each hydrogen 1bond.
Eg: ethene but-2-ene
Draw the structural formula of the following.
But-1-ene hex-2-ene
Pent –1,3-diene hex-3-ene   
Compounds which contain carbon-carbon double bonds are known as unsaturated compounds. Much margarine is high in polyunsaturated fat – these contain a lot of carbon-carbon double bonds.
Arenes
These compounds contain the C6H6 ring structure – known as a benzene ring. Benzene is a cacogenic substance and is not used in laboratories.
It is much safer to use methyl-benzene which has the old name Toluene
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