Chemistry definitions

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Empirical Formula
The simplest whole number ratio of atoms of each element
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Molecular Formula
The number of atoms of each element in a molecule
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General Formula
The simplest algebraic formula of a member of a homologous series
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Structural Formula
The minimal detail that shows the arrangement of atoms in a molecule
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Displayed Formula
The relative positioning of all the atoms in a molecule and all the bonds between them
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Skeletal Formula
A simplified organic formula, with the hydrogen atoms removed from alkyl chains, leaving a carbon skeleton and associated functional groups
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Homologous Series
A series of organic compounds that have the same functional group but with each successive member differing by -CH2-
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Functional Group
Group of atoms responsible for the characteristic reactions of a compound
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Structural Isomers
Compounds with the same molecular formula but different structural formulae
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Stereoisomers
Compounds with the same structural formula but with different arrangement of atoms in space
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E/Z Isomers
An example of stereoisomerism. If there are two different groups attached to each carbon atom of a C=C, then there are two stereoisomers due to the restricted rotation about the double bond
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cis-trans Isomers
A special case of E/Z isomers in which each carbon of the double bond carries the same group
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Curly Arrow
Represents the movement of a pair of electrons
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Homolytic Fission
Breaking of a covalent bond where each bonded atom takes one of the shared pair of electrons
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Heterolytic Fission
Breaking of a covalent bond where one of the bonded atoms takes both of the shared pair of electrons
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Other cards in this set

Card 2

Front

The number of atoms of each element in a molecule

Back

Molecular Formula

Card 3

Front

The simplest algebraic formula of a member of a homologous series

Back

Preview of the back of card 3

Card 4

Front

The minimal detail that shows the arrangement of atoms in a molecule

Back

Preview of the back of card 4

Card 5

Front

The relative positioning of all the atoms in a molecule and all the bonds between them

Back

Preview of the back of card 5
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