Alkenes OCR AS Chemistry

This complete year 12 lesson on alkenes covers part of OCR section 4.1.3 (Alkenes). Content includes structure and reactivity of alkenes, the nature of the C=C double bond, addition reactions of alkenes, the electrophilic addition mechanism and Markownikoff’s rule. The resource features a 47 slide animated PowerPoint that illustrates and explains the concepts in a lively and visual way; it includes several interactive slides that link to other slides to allow a non-linear progression through the concepts. There is a starter and a plenary activity as well as a 16 page workbook. Exam tips and answers to the exercise are provided. Ideal for the classroom or blended learning, this resource could be used as an introduction to the topic, or for revision, extension or consolidation.
This lesson is part of a series covering the OCR AS Chemistry specification and relates to the following part of the specification:
Module 4 – Core organic chemistry
Part 1 – Basic concepts and hydrocarbons
4.1.3 − Alkenes

Content covered:

• Structure and reactivity of alkenes
• The nature of the double bond – sigma and pi bonds
• Explanation of restricted rotation around C=C
• Shape of ethene in terms of electron pair repulsion theory
• Addition reactions of alkenes
• Reactions of ethene and propene including addition of halogens, steam, hydrogen halides and hydrogen
• Test for alkenes with aqueous bromine
• Catalytic addition of hydrogen - mechanism
• Margarine manufacture
• Definition of electrophile
• Electrophilic addition mechanism
• Addition of HX to unsymmetrical alkenes - Markownikoff’s rule and explanation

Duration: 1-2 lessons

Please review!

Links
Previous lesson: topic 46 – Reactions of alkanes
https://www.tes.com/teaching-resource/reactions-of-alkanes-ocr-as-chemistry-12987021

Next lesson: topic 48 – Addition polymers (in preparation)

Lesson on naming hydrocarbons:
https://www.tes.com/teaching-resource/naming-hydrocarbons-with-quiz-as-12243823

Lesson on isomerism, including E/Z isomerism of alkenes:
https://www.tes.com/teaching-resource/isomerism-ocr-as-chemistry-12634065