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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 of the following is the correct sign convention for enthalpy change (?H) in exothermic and endothermic reactions?
Which feature on a reaction profile is reduced when a catalyst is used (compared to no catalyst)?
Which measurement is most directly used to calculate the energy change when a solution is warmed by a reaction in a simple calorimeter?
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 of these processes is endothermic?
A student measures highest temperature reached when reacting fixed volumes of acid with increasing mass of a solid reactant. Which trend would indicate the reaction is exothermic as mass increases?
Which statement about endothermic and exothermic reaction profiles is correct?
Which statement correctly describes an exothermic chemical reaction?
Which observation indicates a reaction has reached completion rather than being at equilibrium?
Which phrase best explains why activation energy is required for a chemical reaction?
When calculating energy change using bond energies, which general rule is correct?