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Tutor HuntTest QuestionsChemistry QuestionsYear 10 Chemistry Questions

 

Energy Transfer During Exothermic And Endothermic Reactions (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'Energy Transfer During Exothermic And Endothermic Reactions' from the broader topic Energy Changes. The test is geared towards the AQA exam board style syllabus.
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Which description best fits an enthalpy profile of an exothermic reaction?
When ammonium nitrate dissolves in water the solution temperature falls. This process is therefore called:
Which factor will NOT change the activation energy of a reaction?
If dissolving 8.0 g of a salt in 200 g water causes ?T = -2.0 °C and specific heat of solution ˜ 4.2 J/g·°C, what is energy absorbed (J) by dissolution? (Use 200+8 ˜ 208 g)
Which observation indicates a reaction has reached completion rather than being at equilibrium?
Which of the following best explains why some reactions are slow even though they are exothermic?
A reaction releases 120 kJ when 2.0 moles of reactant A react. What is the enthalpy change per mole of A (kJ/mol)?
Which statement about endothermic and exothermic reaction profiles is correct?
Which experimental observation best shows a reaction is exothermic?
A student uses bond energies to estimate the enthalpy change of a reaction and finds a small difference from the experimental calorimetric value. Which is the most likely reason?
Which of the following is the correct sign convention for enthalpy change (?H) in exothermic and endothermic reactions?