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Precipitation reactions practicals with copper hydroxide, potassium iodide and lead nitrate International A level Chemistry. Precipitation reaction examples and ionic equations with questions and answers. 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 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 above)
Slide 3: Think – Pair – Share: What is a precipitation reaction?
Slide 4 – Definition of precipitation reaction presented to students
Slide 5 – Opportunity for you to demonstrate a precipitation reaction to the students by reacting sodium hydroxide with copper(II) sulfate. Students will attempt to write an ionic equation for this reaction on mini whiteboards (MWBs)
Slide 6 – Introduction to the practical which students will carry out, which involves measuring the depth of precipitates formed at varying concentrations of solutions to work out the balanced equation. The practical sheet is included with this resource
Slide 7 – Results table
Slide 8 – 9 Printable results tables
Slide 10 – Expected results (if experiment fails or you decide not to do it)
Slide 11 – Manipulation of results to determine the molar ratio. DON’T WORRY: all the steps animate onto the screen clearly
Slide 12 – Balanced equation solved based on molar ratio, and ionic equation is derived
Slide 13 – Introductory slide: Chemical tests and precipitation reactions
Slide 14 – IGCSE recap: chemical test for carbon dioxide
Slide 15 – linking chemical test for CO2 with precipitation reactions. Ionic equation showing formation of calcium carbonate is animated onto the screen
Slide 16 – IGCSE recap: chemical test for sulfates
Slide 17 – Students encouraged to complete the word equation for the reaction between barium chloride and sodium sulfate. Chemical and ionic equation then animate on the screen after subsequent clicks
Slides 18 – 27: Exam questions with mark scheme answers (all included with this resource)

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