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Learning objective

Explain bonding in alkenes using sigma and pi bonds.

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Topic

Alkenes

Subtopic

Structure, bonding and reactivity

Aqa A Level ChemistryOrganic chemistry

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Quick explanation

Explain bonding in alkenes using sigma and pi bonds

  • This point belongs to Alkenes, especially Structure, bonding and reactivity.
  • You need to be able to explain bonding in alkenes using sigma and pi bonds.
  • The key ideas to know are pi bond and alkene.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

pi bondalkene

Why it matters

This objective helps connect Structure, bonding and reactivity to exam-style questions, flashcards, and revision notes for Alkenes.

Quick student answer

Which type of bond is formed by the sideways overlap of p orbitals in alkenes?

Direct answer

Pi bond

Key terms

  • Electrophilic addition: A reaction where an electrophile reacts with a nucleophile, typically involving the addition of atoms or groups across a double bond.
  • Hybridization: The concept of mixing atomic orbitals to form new hybrid orbitals, which can explain the geometry of molecular bonding.

Common trap

Confusing sigma and pi bonds: Remember that sigma bonds are formed by head-on overlaps and allow rotation, while pi bonds are formed by sideways overlaps and restrict rotation.

Related questions

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