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EnglandChemistryQuick questions
4.5 Energy changes
Quick questions on Bond energy calculations - AQA GCSE Chemistry
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is q1?Show answer
State whether breaking bonds is exothermic or endothermic. [1 mark]
What is q2?Show answer
A reaction breaks bonds requiring kJ and makes bonds releasing kJ. Calculate the overall energy change and state the type of reaction. [2 marks]
What is q3?Show answer
Explain why a reaction is endothermic in terms of bond energies. [2 marks]
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