Learning objective
(HT only) Calculate the total energy released when bonds form in products from supplied bond energies. (MS 1a)
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
5
Flashcards
7
Questions
Topic
Exothermic and endothermic reactions
Subtopic
The energy change of reactions (HT only)
Study support
Understand this objective
Short explanation
(HT only) Calculate the total energy released when bonds form in products from supplied bond energies. (MS 1a). This objective belongs to The energy change of reactions (HT only) within Exothermic and endothermic reactions for AQA GCSE Chemistry 8462. A strong answer should use energy released accurately, explain the chemistry behind the statement, and connect the idea back to the exact command in the objective. When revising, separate this point from neighbouring Chemistry ideas by naming the relevant particle, substance, process, calculation, observation, or structure before giving the final conclusion.
Key concepts
Why it matters
This objective helps connect The energy change of reactions (HT only) to exam-style questions, flashcards, and revision notes for Exothermic and endothermic reactions.
Common mistakes
1 linked- Misunderstanding Bond Energies: To fix this, students should clearly differentiate between the energy required to break bonds and the energy released when bonds form, ensuring they follow the correct steps in calculations.
Revision tools
Choose how to practise
Flashcards5 linked cards
Flashcard 1 of 5
Practice Questions7 linked questions
Question 1 of 7
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Revision notestopic notes
Open the full topic revision notes when you are ready to review this objective in context.
Open revision notesRelated learning objectives
- State that energy is conserved in chemical reactions.
Energy transfer during exothermic and endothermic reactions
- Explain that a reaction transferring energy to the surroundings leaves products with less energy than the reactants by the amount transferred.
Energy transfer during exothermic and endothermic reactions
- Define an exothermic reaction as one that transfers energy to the surroundings.
Energy transfer during exothermic and endothermic reactions
- Explain that the temperature of the surroundings increases during an exothermic reaction.
Energy transfer during exothermic and endothermic reactions
- Identify combustion, many oxidation reactions and neutralisation as examples of exothermic reactions.
Energy transfer during exothermic and endothermic reactions