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How can equations be balanced using oxidation states? How can half equations be combined to make an ionic equation? How do you write half equations with hydroxide ions? 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 2 – WCH12, 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 of your lessons by simply changing the questions and the answers each time.
Slide 2 - Lesson objectives (see thumbnail image)
Slides 3 – 5: Recap on writing ionic equations.
Slide 6 – Rules for constructing half equations
Slides 7 – 13: Three worked examples (see video preview) with animations which move you and your students effortlessly through the working out to write two half equations and then combine them to make the ionic equation
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 – 18: This is another worked example, this time involving hydroxide ions, which adds another layer of complexity. All the steps of the working out are animated in a seamless sequence, so that all you need to do is click (and understand the method, of course!)
Slides 19 – 20: Introduces balancing equations using oxidation states. There are two worked examples
Slide 21 - 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 22 – 29: Exam questions with mark scheme answers (included with the purchase of this resource)

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