Page 2: Functional Groups and Combustion
This page focuses on functional groups in organic compounds and the process of combustion.
Definition: A functional group is a reactive group in a molecule that causes many of the reactions of the compounds in the homologous series.
The text identifies the functional groups for alkenes (-C=C-), alcohols (-OH), and carboxylic acids (-COOH). It emphasizes that alkanes lack a functional group, making them less reactive.
The page then delves into combustion reactions, a key topic in CCEA GCSE Chemistry Unit 1 past papers.
Highlight: Complete combustion occurs in a plentiful supply of oxygen, forming carbon dioxide and water, while incomplete combustion in limited oxygen produces carbon monoxide and sometimes soot.
The text explains the differences between alkanes and alkenes gcse in terms of their combustion properties. It also discusses the dangers of carbon monoxide and the importance of proper ventilation and safety measures.
Vocabulary: Flueless gas fires are fitted with catalytic converters, which convert toxic carbon monoxide to non-toxic carbon dioxide.
The page concludes by comparing the combustion of alcohols to that of alkanes and alkenes, noting that alcohols burn with a blue flame due to their lower carbon content.
This comprehensive guide serves as an excellent resource for students preparing for CCEA Chemistry GCSE past papers and exams, covering essential topics in organic chemistry as outlined in the CCEA GCSE Chemistry specification.
