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11.5 Alkenes

Syllabus
0620–2026–2027
Topic
11.5
Level

11.5.1—Bonding in alkenes includes a double

  • State: the bonding in alkenes includes a double carbon–carbon covalent bond and that alkenes are unsaturated hydrocarbons

11.5.2—Manufacture of alkenes and hydrogen by

  • Describe manufacture of alkenes and hydrogen by the cracking of larger alkane molecules using a high temperature and a catalyst

11.5.3—Reasons for the cracking of larger

  • Describe reasons for the cracking of larger alkane molecules

11.5.4—Test to distinguish between saturated

  • Describe test to distinguish between saturated and unsaturated hydrocarbons by their reaction with aqueous bromine

11.5.5—In an addition reaction only one

  • State: in an addition reaction only one product is formed

11.5.6—Alkene addition reactions with

  • Describe alkene addition reactions with bromine/aqueous bromine, hydrogen with nickel catalyst, and steam with acid catalyst; draw structural/displayed formulae of products

Objective notes

6 learning objectives
ConceptIGCSE Chemistry