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Alkenes and Alkanes. Learning Objectives. Use general formulae to identify alkenes and alkanes Use chemical tests to distinguish alkenes from alkanes Compare reactions of alkenes and alkanes. INFO: Ethene and the alkenes. Ethene is part of the alkene family.
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Learning Objectives • Use general formulae to identify alkenes and alkanes • Use chemical tests to distinguish alkenes from alkanes • Compare reactions of alkenes and alkanes
INFO: Ethene and the alkenes • Ethene is part of the alkene family. • The alkenes are a HOMOLOGOUSSERIES, like the alkanes. • Alkenes are UNSATURATED, they contain less hydrogen than the alkanes • They contain reactive carbon DOUBLE bonds
H H H H H H H C C C C C C H C C H H H H H H H H H C H
Alkenes • Alkenes are UNSATURATED, • They have double bonds • They contain less hydrogen than alkanes • The general formula for alkenes is CnH2n What is the name of the alkene with 8 carbon atoms? What is its molecular formula? What is the molecular formula of butene? Draw the displayed formula of C5H10