CH2 Revision (Organic compounds and their reactions)

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Molecular formula
Show the atoms and how many of each atom there are in that molecule (e.g. C2H6)
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Displayed formula
Show all the bonds and atoms that are in the molecule
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Shortened formula
Shows the groups in sufficient detail so that the structure is clear. (e.g. CH2CHCH(OH)CH2CH3)
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Skeletal formula
Shows the carbon / hydrogen backbone of the molecule, also showing any functional group attached.
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What is a homologous series?
It can be represented by a general formula, differ from its neighbour in the series by CH2, have the same functional group ans o very similar chemical properties, have physical properties that vary as the Mr of the compound varies.
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General formula for alkane homologous series?
C(n)H(2n+2)
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Define Empirical formula
The formula of the compound with the atoms of the elements in there simplest ratio.
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What are structural isomers?
Compounds with the same molecular formula, but a different structural formula.
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What is chain isomerism?
When the carbon chain is arranged differently.
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What is position isomerism?
When the functional group is in a different position.
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What is functional group isomerism?
When the functional group is different.
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Define E-Z isomerism
Isomerism that occurs in alkenes due to the restricted rotation around the double bond.
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E isomerism
Like functional groups are generally diagonally opposite each other.
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Z isomerism
Like functional groups are generally on the same side as each other
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Properties of E - Z isomers
They can pack together differently and this can effect the melting and boiling points of the molecule.
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Other cards in this set

Card 2

Front

Displayed formula

Back

Show all the bonds and atoms that are in the molecule

Card 3

Front

Shortened formula

Back

Preview of the front of card 3

Card 4

Front

Skeletal formula

Back

Preview of the front of card 4

Card 5

Front

What is a homologous series?

Back

Preview of the front of card 5
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