Summary
Organic chemistry involves the study of carbon-containing compounds, including alkenes, alcohols, and synthetic polymers.
- Alkenes — hydrocarbons with at least one carbon-carbon double bond. Example: Ethene (C2H4) is a simple alkene used in the production of plastics.
- Alcohols — organic compounds containing a hydroxyl (-OH) group. Example: Ethanol (C2H5OH) is a common alcohol found in alcoholic beverages.
- Synthetic Polymers — large molecules made by joining many small units called monomers. Example: Polyethylene is a synthetic polymer used in making plastic bags.
Exam Tips
Key Definitions to Remember
- Alkenes: Hydrocarbons with carbon-carbon double bonds.
- Alcohols: Organic compounds with a hydroxyl group.
- Synthetic Polymers: Large molecules made from monomers.
Common Confusions
- Confusing alkenes with alkanes, which have only single bonds.
- Mistaking alcohols for acids due to the presence of the -OH group.
Typical Exam Questions
- What is the general formula for alkenes? CnH2n
- How do you test for the presence of alkenes? Use bromine water; it decolorizes in the presence of alkenes.
- What is a common use of ethanol? As a solvent or in alcoholic beverages.
What Examiners Usually Test
- Understanding of functional groups in organic compounds.
- Ability to distinguish between different types of hydrocarbons.
- Knowledge of polymerization processes.