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CAIE IGCSE Chemistry 11.5.6 Alkene Addition Reactions with Questions

Work through real CAIE IGCSE Chemistry questions to write alkene addition equations and draw products from bromine, hydrogen and steam reactions.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • describe addition of bromine or aqueous bromine across an alkene double bond and draw the dibromo product
  • describe hydrogenation of an alkene using a nickel catalyst and draw the alkane product
  • describe hydration of an alkene with steam using an acid catalyst and draw or name the alcohol product
  • apply addition-reaction equations and displayed or structural formulae to ethene, propene and other alkenes, including possible alcohol isomers

CAIE IGCSE Chemistry 11.5.6 Alkene Addition Reactions with Questions question 1

[Maximum number: 1]

Alkenes react with steam in an addition reaction.

Some alkenes produce only one alcohol product.
Some alkenes produce two different alcohols which are structural isomers.
Which row gives the number of alcohol isomers formed when ethene reacts with steam and when propene reacts with steam?

ethene + steam

propene + steam

1

1

1

2

2

1

2

2

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