AOs 1-8 in CER1 for AS Chemistry (F322) OCR

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Empirical formula
the simplest whole-number ratio of atoms of each element present in a compound e.g. ethanoic acid = CH2O
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Molecular formula
The actual number of atoms of each element in a molecule e.g. ethanoic acid = C2H4O2
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General formula
Simplest algebraic formula of a member of a homologous series e.g. alkane = CnH2n+2
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Structural formula
The minimum detail showing the arrangement of atoms in a molecule e.g. propan-2-ol = CH3CHOHCH3
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Displayed formula
The formula of the compund showing the relative positions of atoms and the bonds between them e.g. carbon dioxide = O=C=O
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Skeletal formula
The formula showing the carbon 'skeleton' and the functional groups but not the carbon or hydrogen atoms as part of the alkyl chain.
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Homologous series
A series of organic compounds with a general formula, each having the same functional group and with each successive molecule of the series differing by CH2.
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Functional group
The group of atoms responsible for the characteristic reactions of a compound.
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Other cards in this set

Card 2

Front

The actual number of atoms of each element in a molecule e.g. ethanoic acid = C2H4O2

Back

Molecular formula

Card 3

Front

Simplest algebraic formula of a member of a homologous series e.g. alkane = CnH2n+2

Back

Preview of the back of card 3

Card 4

Front

The minimum detail showing the arrangement of atoms in a molecule e.g. propan-2-ol = CH3CHOHCH3

Back

Preview of the back of card 4

Card 5

Front

The formula of the compund showing the relative positions of atoms and the bonds between them e.g. carbon dioxide = O=C=O

Back

Preview of the back of card 5
View more cards

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