Figure shows the displayed formula of an alkene. The functional group has been circled.
Figure: The displayed formula of an alkene, with its functional group circled

Use Figure to give the number of carbon atoms in one molecule of this alkene.
Name the functional group circled on Figure.
Name the alkene shown in Figure.
40 exam-style questions on AQA GCSE Chemistry 7.2 Reactions of alkenes and alcohols, covering 7.2.1 Structure and formulae of alkenes, 7.2.2 Reactions of alkenes, 7.2.3 Alcohols, 7.2.4a Carboxylic acids, and 7.2.4b Carboxylic acids as weak acids. Each one has a worked solution and a mark scheme showing where the marks go.