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What is the difference between homolytic and heterolytic fission? What are free radicals and electrophiles? What is an addition and substitution reaction? All this and more covered in this comprehensive lesson with questions and answers! This is a Year 12 A level lesson for Edexcel International Unit 1 – WCH11, but it can also be used for all UK exam boards. All the slides in this lesson are fully animated and include answers to every mini plenary question and exam question. The breakdown of the slides (which are best opened on Microsoft PowerPoint) is as follows:

Slide 1 - Title and 5-minute starter. The starter is a grid of four questions entitled ‘last week, last lesson, today’s learning and future learning’. Use this generic slide for all your lessons by simply changing the questions and the answers each time.
Slide 2 - Lesson objectives (see thumbnail image)
Slide 3 – Introduction to the main types of reaction in organic chemistry (addition, substitution, oxidation, reduction and polymerisation)
Slide 4 – Details of addition reaction, with example
Slide 5 – Details of substitution reaction, with example
Slide 6 – Details of oxidation reaction, with example
Slide 7 – Details of reduction reaction, with example
Slide 8 - Details of polymerisation reaction, with example
Slide 9 - learning pit-stop to check students’ learning. A series of questions of increasing difficulty, with the stretch and challenge (S+C) being the hardest. Answers animate onto the screen when you click
Slides 10 – 11: Explanation of how covalent bond fission can lead to the formation of ions or radicals, depending on the type of fission (homo- or heterolytic)
Slide 12 – Definition of an electrophile with an example
Slide 13 - learning pit-stop to check students’ learning. A series of questions of increasing difficulty, with the stretch and challenge (S+C) being the hardest. Answers animate onto the screen when you click
Slides 14 – 19: Exam questions with mark scheme answers (included with the purchase of this resource)

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