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What is the difference between complete and incomplete combustion? Water is a harmless, greenhouse gas – how? How are oxides of sulfur and nitrogen produced during fuel combustion? 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 – Definition of complete combustion, with a general word equation
Slide 4 – discussion points of the products of complete combustion, including an explanation as to why water is considered harmless, even though it is a greenhouse gas
Slide 5 – explanation of the greenhouse effect with a diagram, linking to carbon dioxide
Slide 6 - Definition of incomplete combustion, with a general word equation
Slides 7 – 9: Discussion of carbon particles, carbon monoxide and unburnt hydrocarbons produced during incomplete combustion
Slides 10 – 13: discussion of the oxides of sulfur, how they are produced and how they lead to the formation of acid rain. Equations involving sulfurous and sulfuric acid are given
Slides 14 – 18: discussion of oxides of nitrogen, how they are produced and how they lead to acid rain and breathing difficulties. Equations for the formation of nitrous acid and nitric acid are included
Slide 19 - 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 20 – 25 – Catalytic converter and how they remove some impurities (but not oxides of sulfur)
Slides 26 – 31: Exam questions with mark scheme answers (included with the purchase of this resource)

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