Link to (the familiar!) real world with the question: does adding sugar to tea cause it to cool down?
An informative and step-by-step PowerPoint which guides students through the steps and knowledge involved in constructing a Born-Haber Cycle and calculating lattice enthalpy. Explains why a B-H cycle is used and what lattice enthalpy tells us. Refers to worked examples, questions and exam questions from OCR A syllabus so is ideal if you have a class set of the OCR textbooks too.
Stretch and challenge is (and can be further) incorporated by examples using compounds made of ions with different charges, e.g. alumina.
YouTube videos:
Introduction https://www.youtube.com/watch?v=oLGUA_EssMY&list=PLaD6fcqFKTWju1PsWNzEjMXZ3bCJ32ikf&index=13
Worked example for NaCl: https://www.youtube.com/watch?v=kjkdsaP8fPA&t=39s
Worked example for MgCl2: https://www.youtube.com/watch?v=OUgKByeZg0c&t=48s
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$2.45