Written for Legacy AQA C3.3.1 but also useful for the C5.5.1.3 of the 2018 GCSE (The energy change of reactions) and probably some other exam boards too!
The expectation is that students already know what exothermic and endothermic reactions are, and have encountered qualitative energy profile diagrams.
Resources are:
- A simple powerpoint with two worked examples for working out Delta H
- A worksheet with problems for students. In the first three questions students practice working out the energy for 1 mol of a compound, several mol of a compound, and a mass of a compound (requiring them to first figure out how many moles that is). On the back of the sheet students then apply this to full questions.
- Answers! I did them quickly by hand (as you'll see) so let me know if there are errors. I've showed working wherever I could fit it in so hopefully that's helpful. The only one I couldn't fit in was combusting the three fuels!
The expectation is that students already know what exothermic and endothermic reactions are, and have encountered qualitative energy profile diagrams.
Resources are:
- A simple powerpoint with two worked examples for working out Delta H
- A worksheet with problems for students. In the first three questions students practice working out the energy for 1 mol of a compound, several mol of a compound, and a mass of a compound (requiring them to first figure out how many moles that is). On the back of the sheet students then apply this to full questions.
- Answers! I did them quickly by hand (as you'll see) so let me know if there are errors. I've showed working wherever I could fit it in so hopefully that's helpful. The only one I couldn't fit in was combusting the three fuels!
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Thank you for this - just what i needed!
A very clear and detailed explanation of the topic together with plenty of practice questions with answers provided. Thank you.
Thank you for sharing
Thank you for sharing
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