Course review

3.2 Functional groups: Organic compounds

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Learning objective

3.2.1—Organic formulas

New

• Types: empirical, molecular, structural (full/condensed), stereochemical, skeletal • 3D models • Interconvert molecular, structural, and skeletal formulas

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Learning objective

3.2.2—Functional groups

New

• Give characteristic properties • Groups: halogeno, hydroxyl, carbonyl, carboxyl, alkoxy, amino, amido, ester, phenyl • Identify functional groups by name and structure

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Learning objective

3.2.3—Homologous series

New

• Successive members differ by CH₂ • Series: alkanes, alkenes, alkynes, halogenoalkanes, alcohols, aldehydes, ketones, carboxylic acids, ethers, amines, amides, esters • Recognize general formulas and functional group patterns

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Learning objective

3.2.4—Physical property trends

New

• Melting and boiling points in homologous series • Explain trends using chain length, branching, polarity, and IMF

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Learning objective

3.2.5—IUPAC nomenclature

New

• Systematic naming for organic/inorganic compounds • Up to 6 carbons, one functional group type • Apply nomenclature to saturated or mono-unsaturated compounds with one functional group

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Learning objective

3.2.6—Structural isomers

New

• Same molecular formula, different connectivities • Types: branched, straight-chain, position, functional group isomers • Include primary, secondary, and tertiary alcohols, halogenoalkanes, and amines

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Learning objective

3.2.7 (HL)—Stereoisomers

New

• Same constitution, different spatial arrangements • Cis-trans isomerism: non-cyclic alkenes, C₃-C₄ cycloalkanes • Chiral carbon: non-superimposable mirror images (enantiomers)

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Learning objective

3.2.8 (HL)—Mass spectrometry

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• Fragmentation patterns reveal structural features • Include molecular ion and use supplied fragment data

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Learning objective

3.2.9 (HL)—Infrared spectroscopy

New

• Identify bond types from IR spectra • Functional group region (wavenumber/cm⁻¹) • Interpret characteristic absorptions using data booklet values

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Learning objective

3.2.10 (HL)—¹H NMR spectroscopy

New

• Chemical environments of hydrogen atoms • Information: number of signals, chemical shifts, integration • Use chemical shift and integration data to deduce structures

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Learning objective

3.2.11 (HL)—NMR splitting patterns

New

• Singlets, doublets, triplets, quartets • Use splitting patterns to infer neighbouring hydrogen atoms

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Learning objective

3.2.12 (HL)—Combined data analysis

New

• Use multiple techniques for structure determination

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