Energy ChangesMedium Exam FrequencyAQA

Bond Energies (HT)

Revise Bond Energies (HT) in Energy Changes for GCSE Chemistry with 20 exam-style questions and 15 flashcards. This topic appears regularly enough that it should be part of a solid GCSE revision cycle.

Sample Flashcards

What are the units for bond energy?
kJ/mol (kilojoules per mole)
What is bond energy?
The energy needed to break 1 mole of a particular bond

Sample Questions

Which statement correctly describes the energy change when chemical bonds are broken?

  • A. Energy is released to the surroundings
  • B. Energy is absorbed from the surroundings
  • C. No energy change occurs
  • D. Energy may be released or absorbed depending on the bond
1 markfoundation

Explain how you would determine, from a bond energy calculation, whether a reaction is exothermic or endothermic.

2 marksstandard

20

exam-style questions

15

revision flashcards

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