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What is an addition reaction? What is hydrogenation and what are the conditions? What is hydration of an alkene? How can potassium manganate(VII) be used to test for unsaturation? 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. The key word for the lesson, sustainable, is displayed here with the definition
Slide 2 - Lesson objectives (see thumbnail image)
Slide 3 – Hinge question (on mini whiteboards): Alkanes and alkenes look the same. How can we distinguish between them?
Slides 4 – 6: Video questions for students to answer while they watch the video of the reactions of alkanes and alkenes with bromine water. If you have the chemicals in your school, then by all means skip the video and do the practical!
Slide 7 – the video (embedded in the PowerPoint
Slide 8 – video question answers
Slide 9 – conditions and positive result for the test for alkenes using bromine water
Slide 10 – MWB hinge question: what is the explanation for this result?
Slide 11 – explanation offered based on alkene’s pi bond and susceptibility to electrophilic attack
Slides 12 – 13: examples of addition reactions that alkenes undergo
Slide 14 - 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 15 – 16: Hydrogenation as an example of addition reaction, including the reaction condition
Slide 17 – hydration as an example of addition reaction
Slide 18 – Addition of hydrogen halides to alkenes
Slide 19 – oxidation-addition reactions, and how potassium manganate(VII) can be used as a test for unsaturation
Slide 20 – Independent practice. A series of questions for student to embed their learning. Answers animate onto the screen when you are ready to review

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