What you’ll learn4 learning objectivesChoose one objective for a focused lesson, or study the complete topic.13.3.1Organic molecules as either straight-chained,• Describe organic molecules as either straight-chained, branched or cyclicSyllabus objective13.3.2Shape of, and bond angles in, molecules• Describe/explain: the shape of, and bond angles in, molecules containing sp, sp 2 and sp3 hybridised atomsSyllabus objective13.3.3Arrangement of σ and π bonds in molecules• Describe the arrangement of σ and π bonds in molecules containing sp, sp2 and sp3 hybridised atomsSyllabus objective13.3.4Terms: planar when describing the arrangement• Use terms: planar when describing the arrangement of atoms in organic molecules, e.g. etheneSyllabus objective