Unit 1 Section 4 Isomers

Structural Isomer

A molecule with the same molecular formula as another molecule but with the atoms connected in a different way.

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Chain Isomer

A molecule that contains the same atoms as another molecule but has a different arrangement of the carbon skeleton.

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Positional Isomer

A molecule with the same molecular formula as another molecule but with the functional group in a different position.

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Functional Isomer

A molecule with the same molecular formula as another molecule, but with the atoms arranged into different functional groups.

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Identifying Isomers

Atoms can rotate about their single C-C bonds. So count from right to left the number of carbons in one chain.

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A molecule that contains the same atoms as another molecule but has a different arrangement of the carbon skeleton.

Chain Isomer

A molecule with the same molecular formula as another molecule but with the functional group in a different position.

A molecule with the same molecular formula as another molecule, but with the atoms arranged into different functional groups.

Atoms can rotate about their single C-C bonds. So count from right to left the number of carbons in one chain.

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