Octahedral tetrahedral linear complexes? Why do complexes with chloride ligands have tetrahedral geometry? Cisplatin mechanism of action? All this and more covered in this comprehensive lesson with questions and answers! This is a Year 13 A level lesson for Edexcel International Unit 5 – WCH15, 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.

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 – recap of VSEPR theory
Slides 4 – 6: Y12 recap questions on shapes of molecules and bond angles. Answers appear on the screen as you click. Print hidden slides 5 and 6, two slides per sheet and trim
Slide 7 – introduction slide to predicting the shape of complexes
Slides 8 – 9: introduction to the three most common complex shapes (octahedral, tetrahedral and linear), and how to recognise when a molecule has this geometry
Slide 10 – further notes on octahedral complexes and the ligands which lead to the formation of these complexes
Slide 11 – explanation as to why chloride ligands lead to the formation of tetrahedral complexes
Slide 12 – further notes on linear complexes
Slide 13 - learning pit stop questions to test students’ understanding so far. Answers animate on the screen when you click
Slide 14 – Hinge: students asked to use the 3D model of xenon tetrafluoride on the board to draw the 3D representation. This serves as an introduction to a new shape for them: square planar
Slide 15 – explanation of what square planar means and what the bond angles are
Slides 16 – 18: cisplatin, a square planar complex. Students will be taught how to draw both cis- and transplatin
Slide 19 – use this slide to discuss cisplatin as an anticancer drug
Slide 20 - learning pit stop questions to test students’ understanding so far. Answers animate on the screen when you click
Slides 21 – 26: exam questions with mark scheme answers included with this resource

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