51ºÚÁÏ

Atom Economy, designed for A Level Chemistry (OCR, AQA, Edexcel). This lesson covers the definition of atom economy, how to calculate it using balanced equations, and how to apply it to green chemistry and industrial processes. 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 green chemistry?
Slide 4 – Definition of green chemistry
Slide 5 – Introduction to 12 principles of green chemistry
Slides 6 – 7: Printable form of green chemistry slides
Slide 8 – Atom economy focus slide
Slide 9 – Atom economy formula introduction
Slide 10 – Atom economy explained using the manufacture of ethanol. Fermentation of glucose and hydration of ethene both form ethanol, but each reaction has a different atom economy. This is explored, with students being shown that addition reactions always have atom economies of 100%
Slide 11 – What is a good atom economy? This is explained on this slide
Slide 12 – Worked example 1: Sodium carbonate is an important industrial chemical manufactured by the Solvay process. The overall equation for the process is: CaCO3 + 2NaCl  Na2CO3 + CaCl2 A manufacturer starts with 75.0 kg of calcium carbonate and obtains 76.5 kg of sodium carbonate. Calculate the percentage yield and atom economy for this reaction. Answers animate onto the screen
Slides 13 – 14: Printable version of the question
Slide 15 – What is a ‘good’ percentage yield? This is explained on this slide
Slide 16 – Worked example 2 (same set up as worked example 1, but a harder example)
Slides 17 – 18: Printable version of the question
Slides 19 – 23 – Exam questions with mark scheme answers (included with the resource)

If you have a positive experience with the resource please leave a positive review! This really helps promote my store!