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Tutor HuntTest QuestionsChemistry QuestionsYear 10 Chemistry Questions

 

The Energy Change Of Reactions (ht Only) (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'The Energy Change Of Reactions (ht Only)' from the broader topic Energy Changes. The test is geared towards the AQA exam board style syllabus.
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Below a typical questions that will be covered in this test. You final score will be logged on your account

Which expression gives the overall enthalpy change using bond energies?
In a theoretical Hess’s law question you are given two reactions to add to make a target reaction. What operation is usually required when reversing one of the given equations?
What is the activation energy of a reaction?
Which of the following changes will increase the temperature change measured in a dissolving experiment (greater |?T|)?
How does a catalyst affect a reaction profile?
Which is the best reason to use ?H in kJ mol-1 rather than kJ g-1 when reporting enthalpy change?
Which formula is used to calculate the heat energy change in a simple calorimetry experiment using a liquid?
On an energy level diagram (reaction profile), what does the overall energy change (?H) represent?
Which methodological change will reduce heat lost to the environment during a temperature-change experiment?
A student measures a temperature fall when dissolving ammonium nitrate in water. Which conclusion is correct?
Which of these best explains why bond breaking is endothermic and bond forming is exothermic?