Study Guide & Educational Overview
### Organic Chemistry Essentials:
* **Functional Group Signatures**: Alcohols (-OH), Aldehydes (-CHO), Ketones (C=O flanked by carbons), Carboxylic acids (-COOH), Esters (-COO-), and Amines (-NH2).
* **Reaction Mechanisms**: Nucleophilic substitution (SN1 vs SN2 based on sterics and carbocation stability), electrophilic addition across double bonds, and dehydration/condensation reactions forming peptide and ester bonds.
* **Stereochemistry**: Chiral centers contain four distinct substituents producing non-superimposable mirror image enantiomers; optical activity rotates plane-polarized light.
* **Biological Macromolecules**: Polypeptides folded into alpha-helices and beta-sheets, triglycerides constructed from glycerol and three fatty acid chains, and DNA/RNA polynucleotides joined by phosphodiester bridges.
* **Functional Group Signatures**: Alcohols (-OH), Aldehydes (-CHO), Ketones (C=O flanked by carbons), Carboxylic acids (-COOH), Esters (-COO-), and Amines (-NH2).
* **Reaction Mechanisms**: Nucleophilic substitution (SN1 vs SN2 based on sterics and carbocation stability), electrophilic addition across double bonds, and dehydration/condensation reactions forming peptide and ester bonds.
* **Stereochemistry**: Chiral centers contain four distinct substituents producing non-superimposable mirror image enantiomers; optical activity rotates plane-polarized light.
* **Biological Macromolecules**: Polypeptides folded into alpha-helices and beta-sheets, triglycerides constructed from glycerol and three fatty acid chains, and DNA/RNA polynucleotides joined by phosphodiester bridges.
Frequently Asked Questions
An aldehyde has a carbonyl carbon bonded to at least one hydrogen atom (at the end of a chain), whereas a ketone has a carbonyl carbon bonded to two carbon atoms.
In the addition of HX to an unsymmetrical alkene, hydrogen attaches to the double-bonded carbon bearing more hydrogen atoms, yielding the more stable carbocation intermediate.
