This lesson is designed for the NEW AQA Trilogy Chemistry GCSE, particularly the ‘Chemical Analysis’ SoW.
 
Students are introduced to the idea that scientists are able to conduct quick and simple tests to identify a number of gases - oxygen, carbon dioxide, hydrogen, chlorine.
 
Pupils will now complete a circus of activities, moving around the room to conduct tests for the presence of oxygen, hydrogen and carbon dioxide, recording their results in a table in their books. Pupils will need to watch a teacher demonstration for the test for chlorine, they can also record their observations of this demo in their table of results. Pupils will then be shown a video outlining each of the gas tests, they can watch this to self-assess their answers from the investigations they carried out.
 
Students will now be given a card sort, for each gas - oxygen, carbon dioxide, hydrogen and chlorine - they will need to identify the correct method and correct positive results. They should do this with their books closed so they don’t rely upon the results collected from the last task! Their work can then be self-assessed using the mark scheme provided.
 
The next task is a ‘Quick Check’ activity whereby pupils need to answer a set of questions based upon what they have learned this lesson, the answers to this task is provided in the PowerPoint so students can either self-assess or peer-assess their work.
 
The plenary task is ‘Take a minute’ where students need to spend a minute talking to the person next to them about what they have learned in the lesson.