<p>Foundation tier lesson on testing for gases as part of the AQA Combined Science (Trilogy) specification.</p> <p>The lesson involves four practical stations where students carry out the tests for oxygen, chlorine, hydrogen, and carbon dioxide. Note - the carbon dioxide test usually takes longer than the others so an alternative is to demo this to the class and let them carry out the others.</p>

<p>This knowledge organiser summarises the key information from the ecology topic from AQA GCSE Combined Science (trilogy).</p> <p>Everything is included except the required practical on sampling (as it didn’t fit). Students may need to be provided with an additional resource for this.</p>

<p>AQA Combined Science (Trilogy) - Energy changes (5.5) and Quantitative Chemistry (5.3).</p> <p>This is a knowledge organiser designed for a mixed foundation and higher tier class, with target grades ranging from 44 to 66. It contains the basic essential knowledge to get marks. I use the resource as a knowledge bank for students in class but it does not include the process for reacting mass calculations at higher tier.</p> <p>Feedback received with appreciation.</p>