Module 4 Core Organic Chemistry
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Hydrocarbons
A compound containing only hydrogen and carbon atoms
Saturated hydrocarbons
Contain only single carbon-carbon bonds
What are saturated hydrocarbons known as?
Alkanes
General formula of alkanes
CnH2n+2
Unsaturated hydrocarbons
Contain at least one multiple bond between carbon atoms
What are unsaturated hydrocarbons known as?
• Known as alkenes if carbon double bond present • If carbon triple bond present, mown as alkynes
Alkynes
Carbon triple bond present
General formula of unsaturated hydrocarbons
CnH2n
Compounds containing a benzene ring are ____________________
Unsaturated
Draw the two different benzene rings
Homologous Series
Family of compounds containing same functional group but with each successive member differing by a —CH2 group
Name the first 10 alkanes
• Methane • Ethane • Propane • Butane • Pentane • Hexane • Heptane • Octane • Nonane • Decane
Explain the trends in physical properties of alkanes as you go along there successive order
• As Mr of each member increases by a CH2 group, Mr increases by 14 • Melting and boiling point increases as chain increases
Why does the melting and boiling points of alkanes increase?
Chain length increases
Functional Groups
Atom/group responsible for the characteristic reactions of the compound
Why do alkanes contain no functional group?
Alkanes are relatively inert
Which suffix do alkyl groups contain?
‘yl’
General formula of alkyl groups
CnH2n+1
What symbols are used to label alkyl groups?
‘R’ groups
What do ‘R’ groups represent?
‘R’ is used to represent other fragments of an organic compound, they’re not involved in reactions
What do organic molecules usually comprise of?
• A ring of C atoms • Alkyl (R) groups • 1+ functional groups
DO NOT LEARN IUPAC Nomenclature of Organic Chemistry DO NOT LEARN DO NOT LEARN
A systematic naming method of naming organic compounds as recommended by the international union of pure and applied chemistry DO NOT LEARN DO NOT LEARN
Name the prefixes for all groups upto 10
Name each alkyl group