alkanes alkenes
Overview
This lesson introduces alkanes and alkenes, two fundamental homologous series of hydrocarbons. We will explore their structures, nomenclature, physical properties, and characteristic reactions, highlighting the differences arising from their bonding. Understanding these foundational organic compounds is crucial for further study in organic chemistry.
1. Introduction to Hydrocarbons: Alkanes
Hydrocarbons are organic compounds composed solely of carbon and hydrogen atoms. Alkanes are the simplest homologous series of hydrocarbons, characterised by having **only single carbon-carbon bonds**. This makes them **saturated hydrocarbons**. Their general formula is **CnH2n+2**. * **Structur...
Unlock 4 More Sections
Sign up free to access the complete notes, key concepts, and exam tips for this topic.
No credit card required · Free forever
Key Concepts
- Homologous Series: A series of organic compounds with the same general formula, similar chemical properties, and a gradual change in physical properties.
- Saturated Hydrocarbon: A hydrocarbon containing only single carbon-carbon bonds.
- Unsaturated Hydrocarbon: A hydrocarbon containing at least one carbon-carbon double or triple bond.
- Isomers: Compounds with the same molecular formula but different structural formulae.
- +4 more (sign up to view)
Exam Tips
- →Master IUPAC nomenclature for both branched alkanes and alkenes, including the use of locants for double bond positions and substituents. Practice drawing structures from names and vice-versa.
- →Understand the difference in bonding (sigma vs. pi bonds) and its implications for reactivity and isomerism (free rotation in alkanes vs. restricted rotation in alkenes leading to cis-trans isomerism).
- +3 more tips (sign up)
More Chemistry Notes