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Alkenes and Alkanes

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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Alkenes and Alkanes

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  1. Alkenes and Alkanes

  2. Learning Objectives • Use general formulae to identify alkenes and alkanes • Use chemical tests to distinguish alkenes from alkanes • Compare reactions of alkenes and alkanes

  3. 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

  4. 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

  5. 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

  6. Practical: Identifying Alkenes

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