What you’ll learn9 learning objectivesChoose one objective for a focused lesson, or study the complete topic.11.1.1And interpret the displayed formula of• Draw and interpret the displayed formula of a molecule to show all the atoms and all the bondsSyllabus objective11.1.2Write and interpret general formulae• Write and interpret general formulae of compounds in the same homologous series, (a) alkanes, C nH2n+2 (b) alkenes, CnH2n (c) alcohols, C nH2n+1OH (d) carboxylic acids, CnH2n+1COOHSyllabus objective11.1.3Functional group as an atom or group• Identify a functional group as an atom or group of atoms that determine the chemical properties of a homologous seriesSyllabus objective11.1.7Structural formula is an unambiguous• State: a structural formula is an unambiguous description of the way the atoms in a molecule are arranged, including CH 2=CH2, CH3CH2OH, CH3COOCH3Syllabus objective11.1.8Structural isomers as compounds with• Define structural isomers as compounds with the same molecular formula, but different structural formulae, including C4H10 as CH3CH2CH2CH3 and CH3CH(CH3)CH3 and C4H8 as CH3CH2CH=CH2 and CH3CH=CHCH3Syllabus objective11.1.4Homologous series is a family of• State: a homologous series is a family of similar compounds with similar chemical properties due to the presence of the same functional groupSyllabus objective11.1.5Saturated compound has molecules in• State: a saturated compound has molecules in which all carbon–carbon bonds are single bondsSyllabus objective11.1.6An unsaturated compound has molecules• State: an unsaturated compound has molecules in which one or more carbon– carbon bonds are not single bondsSyllabus objective11.1.9Homologous series features: same• Describe homologous series features: same functional group and general formula, adjacent members differ by -CH2-, physical properties show trends, chemical properties are similarSyllabus objective