Organic Chemistry

eddienorris19
Mind Map by , created almost 6 years ago

Mind Map on Organic Chemistry, created by eddienorris19 on 12/21/2013.

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eddienorris19
Created by eddienorris19 almost 6 years ago
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Organic Chemistry
1 Molecular Formulae

Annotations:

  • Simply counts the numbers of each sort of atom present in the molecule, but tells you nothing about the way they are joined e.g Propane's molecular formula is C3H8
2 Structural Formulae

Annotations:

  • Shows how the atoms are joined up. The structural formula of propane is CH3CH2CH3. 
3 Displayed Formulae

Annotations:

  • Shows all the bonds in the molecule as individual lines. Each line represents a pair of shared electrons. STICK DIAGRAMS. 
3.1 Stick Diagram of Butane
4 Coding the chain length

Annotations:

  • See p.151 of Edexel IGCSE Chemistry Student Book.
5 Coding for the type of compound
5.1 Alkanes

Annotations:

  • A family of similar hydrocarbons (compounds of carbon and hydrogen only) in which all the carbons are joined to each other with simple covalent bonds. Compounds like this are coded with the ending 'ane' e.g ethane is a two-carbon chain (because of 'eth') with a carbon-carbon single bond, CH3CH3
5.2 Alkenes

Annotations:

  • A family of hydrocarbons which contaiin a carbon-carbon double bond. Their names end in 'ene' e.g ethene is a two carbon chain containing a carbon-carbon double bond, CH2=CH2.  The number in the chain tells you which carbon atom the double bond starts from. e.g but-1-ene, a four-carbon chain with a double bond starting on the first carbon
6 Coding for branched chains

Annotations:

  • See p.152 of Edexel IGCSE Chemistry Student Book.
7 Structural isomerism

Annotations:

  • Structural isomers are molecules with the same molecular formula, but with different structural formulae.  WARNING! don't confuse the word isomer with isotope. Isotopes are atoms with the same atomic number but different mass numbers.  Structural Isomerism is the existence of two or more different structures with the same molecular formula. (see p.153 for examples) To avoid mistakes always draw your isomer so that the longest carbon chain is horizontal.