NEW AQA GCSE Trilogy (2016) Chemistry - Relative Formula Mass & Moles

This lesson is designed for the NEW AQA Trilogy Chemistry GCSE, particularly the ‘Chemical calculations’ 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

The lesson begins with an introduction to relative atomic mass, including an explanation of how we can use the periodic table to find the atomic masses of different elements. In order to assess their understanding of this topic pupils will then complete a table identifying the atomic number, mass number and the number of electrons/protons/neutrons found within atoms of specific elements. This task can then be assessed using the answers provided in the PowerPoint presentation.

Pupils will now think about what the formula of a chemical compound tells us about the elements found in that compound. Using examples pupils will be taught about formulae, they will then be given a list of formulae for various different chemical compounds and will need to list the different elements found in that compound as well as the number of atoms of each of the elements. This task can then be assessed using the answers provided.

The next part of the lesson will focus on relative formula mass, pupils will be taught, using a worked example, how to calculate the relative formula mass for a chemical compound. They will then need to complete tasks involving the calculations of relative formula mass, once complete pupils can self-assess their work using the answers provided.

The last part of the lesson focuses on moles, the definition is first introduced to pupils which can be explained further using the link the video included in the PowerPoint. Pupils are then shown how to calculate the number of moles of a substance using the relative formula mass and actual mass of a substance. Pupils will be then need to complete a set of calculations to work out the moles of different substances, this task can be assessed using the answers provided. Pupils are lastly shown how to rearrange this calculation where needed, they can then apply this skill to a new set of problems. The answers to which are included in the PowerPoint presentation, pupils can use this to assess their work.

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 :)