NEW AQA GCSE (2016) Chemistry - Electrolysis

This lesson is designed for the NEW AQA Trilogy Chemistry GCSE, particularly the ‘Chemical changes and electrolysis’ SoW.

For more lessons designed to meet specification points for the NEW AQA Trilogy specifications for Biology, Chemistry and Physics please see my shop: https://www.tes.com/teaching-resources/shop/SWiftScience

Firstly, students are introduced to the term ‘Electrolysis’ including a description of the process, a list of key words associated with the process and a diagram. Students will now watch a video about the process, using which students will need to answer a set of questions. After they have completed this task they will be able to self-assess their work using the mark scheme provided.

Students will now complete a fill-in-the-blank task to summarise what they have learnt so far, this can be assessed using the answers provided.

Pupils are now shown a diagram to demonstrate what is happening at the anode and cathode during the electrolysis of lead bromide, pupils will need to use the list of key words provided to complete captions to describe what is happening at each electrode. Students can check their work against the example answers provided in the PowerPoint.

Next, pupils are shown the ionic half-equations for the reactions occurring at the anode and cathode during the electrolysis of lead bromide. Pupils will then need to identify the products at each electrode, as well as complete the ionic half-equations, for the electrolysis of a set of ionic compounds: lihtium oxide, sodium chloride and magnesium chloride. Once complete, pupils can self-assess their work using the answers provided.

The next part of the lesson focuses on the products formed at each electrode when the ionic compound is within an aqueous solution. Students will be shown what will happen at the anode and at the cathode, using this information they will need to predict the products formed at the anode/cathode during the electroysis of set of solutions. Students can self-assess their using using the answers provided.

The final task focuses on the electrolysis of brine, students will watch a video and will need to answer a set of questions using the information provided in the video. After completing this task, pupils will need to self-assess their work using the answers provided.

The plenary task requires pupils to write a ‘Whatsapp’ message to a friend to explain what they have learnt this lesson.

All resources are included at the end of the presentation. Thanks for looking, if you have any questions please let me know in the comments section and any feedback would be appreciated :)