Edexcel International A Level Chemistry Core Practical 4 lesson on preparing a standard solution and titrating sodium hydroxide accurately. All this and more covered in this comprehensive lesson with questions and answers! This is a Year 12 AS level lesson for Edexcel International Unit 1 – WCH11, but it can also be used for Edexcel UK A level, since the practical is the same! 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 quiz on key terms relating to titration (standard solution definition, colours of indicators in solutions, etc.)
Slide 4 – aim of practical is presented to students (To make a solution of known concentration of acid and use it to find the concentration of a solution of sodium hydroxide)
Slide 5 – equipment list
Slide 6 – control measures for safety
Slides 7 – 8: method for the practical
Slides 9 – 11: results tables. Print the hidden slides as two slides per page and trim for your students
Slides 12 – 13: this section unpicks some of the steps in the method in a bit more detail, explaining thoroughly some techniques or concepts which Edexcel frequently assume your students (or you!) know already! This will also help students with Paper 3 exam questions
Slide 14 – important notes on titration
Slide 15 – safety slide to be displayed during the practical
Slides 16 - 18: sample results. At least one group in your class will need these!
Slides 19 – 21: analysis questions to be completed after the practical. Print and have to hand for those groups which will finish early
Slide 22: answers to the analysis questions animate on the slides as you click, for you to review with your class
Slides 23 - 25: evaluation question. These are exam-style questions and students should complete these in their exercise books. The hidden slides are intended to be printed
Slide 26: answers to the evaluation questions for you to review with your students

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